What are strangling dreams about?

In the dream I am in some kind of abandoned mountain side station with 2 other men we are not friends but have teamed up so to speak. We are trying desperately to find our way out to escape but I don't know why. The facility is empty pale blue walls it has an almost clinical feel but I know it's not a hospital. I see a man run into a room finding light up the stairs he keeps running not looking where just desperately heading towards the light. He is blocked by a metal gate that looks out into the outside world, it must be a cliff face there are vines and moss hanging down on the other side then a trap door shuts behind him pinning him between the gate and slab to his back. There a 2 wholes in the wall and a level seemingly to lift the slab for. 2 men then rush into the room they go for the lever but the stuck man warns them about the trap that the lever will send 2 spear like spikes coming out of the wall to impaled those trying to operate the lever. With this knowledge in mind they proced carefully and manage to succeed. The 2 men are of myself or the one I feel most comfortable with and a hard looking tough man, the kind of man a shy kid sometimes ends up with to protect them from bullies not realising that they are the bullie. The 3 of us then proceed to explore the rooms in search of an exit still try to escape, not rushed or in fear just escape a maze of all look the same corridors and rooms. The man and my friend do not like each other I say that we should try to look for provisions food and the like. We search a group of rooms each taking one I find a small room with a table couple chairs and a fridge. I open the fridge to find some food, but what stuck out was 3 bottles of cold beer... I call my friend and the man into the room to what I have found my friend is happy about the beer and shares a quick drink with me seeming friendly towards me, I remember how cold and refreshing it was. The other man then comes in my friend makes no attempt to hide his dislike for him and grasps the 1 remaining beer from the fridge and heads out of the room. The man comes to the fridge in search but I know there is none left then I look and there is one more bottle hiding in the corner I get it and offer it to him I feel a disappointing gaze from my friend who sees the exchange and feel uneasy. My view now changes to the pov of my friend going to the elevator and pressing the bottom, something seems wrong though a he feels the need to wrap a cloth around both of the hands and pull tightly as if getting ready to strangle someone on the other side of the door. The other man catches up with him and he stands to the left of the elevator at what seems like a safe distance. Then seeing the door behind my friend begin to open his eyes go wide a d my friend turns to meet the challenge. What happens next is so horrific that I still cannot explain why I saw it. My view shifts back to 'me' the man in the small room with the fridge, I come round the corner to the elevator and am confronted with the terrible sight of the elevator doors trying to shut with a body inside the doors, these doors however do not close sideways these close from top to bottom. Between each half ly's a crumpled bofy of a strange man whos head is forced forward at an unatural angle his back straightlyind down between the two halfs of the elevator doors. His head being slowly crushed with the pressure. I feel sick and struggle not to vomit. I look to the right of this and see my friend in a similar condition not mangled or anything like that of the stranger but struggling to save himself from being crushed between another elevator doors trying to shut with his body in between. I then look left and see the other man in an open elevator shaft on top of the elevator itself moments before being crushed between the elevators roof and the shaft ceeling. At this point I wake up....

so my Maltese terrier dog sometimes bangs on the backyard door signifying he wants to come in. so in the dream hes banging the door then suddenly his figure turns into a shadowy figure and gets bigger and the banging starts to get really intense and that's when i wake up in a sleep paralysis feeling half asleep half awake cant move my body and my breathing is shallow, actually kinda felt like my neck had pressure on it like i was getting strangled really softly though. not sure how long the sleep paralysis was but i think i fell back asleep and i wake up later and everything was back to normal.

I had a really in depth, horrifying nightmare last night, probably from pneumonia kicking my ass and taking a plethora of meds,
so~
I'm gonna tell y'all all about it.
*Content warning, triggers and everything else disturbing.*
So, Earth was post apocalyptic, after Trump started WWIII, let's just start there.
Houses were gone, presumably burnt down in riots.
The small remaining population was made up of several hundred slews of people, kind of like in the movie "The Road"(look it up, and if you can't handle realistic cannibalism, don't watch it).
The herd of people I had joined, some co-workers of mine, a few neighbors, (thankfully my child wasn't existent) was meandering the streets, in search of refuge, maybe 10 of us? We happened upon a group who was seemingly harmless, but had an obvious leader, whose intentions were uncertain to me. They had found an old bunker and were creating their campsites within it. (Families, co-workers, children)
Here's where it gets FUCKED UP.
The leader, white man in his early thirties, let's call him John, let us know all of the young women needed to be initiated, because women were of lesser value. APPARENTLY that meant we were all supposed to engage with John sexually in competition with another woman (from our own home group) and one of us had to die to show one's dedication to survival. (Fucked, right?) Even more fucked up, all of it had to be witnessed by everyone in a stage-like set up, like the goddamn ancient Coliseum. We were allowed to bring weapons, and we could decide who we had to pit against one another. Obviously I was one of them, it's MY nightmare after all. Our weapons of choice were wooden spatulas and spoons, don't fucking ask me why, I'm just as confused as you at this point. I won't name my opponent, but she's someone I know in real life (yikes). We start the fight, an hour late, taking turns trying murder the other. While engaging in coitus with John. Ew, I know, right? Then, THEN, my sister COMES OUT OF NOWHERE with a long piece of twine, hands me one end of it, John stands up. My sister and I then RING THIS DUDE'S NECK with it. Until he strangles to DEATH. Everyone is silent, there's an audience of like 200 people so it's already really weird. Everyone cheers that John is dead. Me and the other girl are naked and crying, cause why the fuck not? And it cuts to me in a café where I'm waiting for a job interview after the new world order starts to civilize. My mom is with me.
She wishes me good luck, I walk to a large office with an opaque glass door, AND OUT WALKS JOHN TO INTERVIEW ME. At this point I forced myself awake cause I was just suffering lmao. The end.

I feel crazy for saying this, but my family and friends do not believe me at all, and I feel so alone and alienated. It’s very rare for me whenever I dream, but when I do it feels like an entire minute of a situation, and I wake up and I think I’ve done it before or it’s some sort of weird dream, but later in a week or two the minute of a situation actually happens and I sort of have these moments like what the fuck?Deja Vu? It freaks me out, I sometimes have a mental breakdown because of how accurate things are, lately for some reason, a lot of the times I’ll be sleeping and I wake up and there’s this snake, big enough that can strangle and then possibly eat me, but every damn time I see a snake moving around on my bed or it jumps out at me, i then wake up and there was no snake at all, it legitimately terrifies me.. I don’t know what it is, and it’s probably something stupid that could be easily explained in a few sentences. I hate it, it’s the worst thing that I experience. I spend a lot of nights staying up and I do my best to get minimum of 4-5 hours of sleep in the span of two to three days, but of course I sleep in and fall asleep for 13-17 hours at most and I keep experiencing a few glimpses that later happens IRL, which I also keep experiencing snakes coming into the safety of my bedroom and kills me. Every now and then, I won’t experience glimpses or snakes which is very RARE but when it does happen: it’s always my family or somebody I know and love, killing me in assortment of ways, i tried talking to therapist but they call me crazy, I tried talking to my friends and families and they too, tell me I’m crazy, overdramatized, overwhelmed..and it’s so lonely..

I have a dream to share, I have my own interpretation, but since I can't really detach from my own persona my interpretation is going to be limited and that is when you come into play :) I am also going to add some basic context to the events.

All the places and people in this dream are real. I am in a cellar with my mother where we *question* my female friend. She acts like a dog in subtle ways - the way she looks at us and the way she sits on the floor (like our dog does). My mother claims that my friend is a chinese spy (The friend is in reality from Western Asia, meanwhile my family is from Europe) and wants her to confess it, but the friend denies it. I am defying my mom and trying to protect my friend. Eventually my mother or both of us (I am not 100% sure if it's just her) start to strangle her and scratch on her neck. But she keeps denying it. My mother then finds a teabag at her and tears it, spilling all the grains of tea until she finds one bigger grain which she believes is a *bug.* My friend then tries to bite me, but I flinch back so she doesn't bite my nose off. (This is also a thing my dog does).

I am very interested in your opinions and thoughts on this dream. Also feel free to ask about anything :) Also if so, judge my subconscious gently <3