What are character dreams about?

Last night I had a dream that has left me confused, grieving and distant from real life.
Has anyone ever had a dream that’s lasted weeks, months or even a lifetime?
My dream started with some kind of apocalypse happening, I watched the world get turned upside down. A lot of people survived but the dynamics of any kind of social system had fallen.
I lived life travelling with a group of people, trying to find food water and essentials. We tried to settle down and make home at some random empty houses but each time something ended up making us move.
In this dream I made people, faced challenges with them, saw them die, I ran for my own life but in the end lost mine too.
It felt like I lived this life for months if not years. Too many details to explain on here but I can add if anyone’s interested. But in the end my dream ended with civilisation slowly getting back to a structured system. We went on a plane that we had found however once it was up in the air not long after some kind off technical issue made the plane start to fall. It went quickly I could only see from my perspective flashing in and out of consciousness until I suddenly saw the plane go down from A Birdseye view. And then I was taken to A place that was nowhere.. nothing existed except a voice talking to me.
I then saw little clips of my fpeopleI made in this life, From years after the plane crash when civilisation was coming together. I saw a clip of my frpeoplealking into a room in a house smiling. I saw a little gipeopleick up ring that had fallen from the plane crash. I saw other people living their life years later finally at peace. I remember I was crying and I was happy for them that they were okay and things had gotten better for them.

Then I woke up, I felt so confuse it had felt like I just lived a whole life in one night of sleeping. the real world doesn’t feel real anymore. I feel disorientated and not sure what this means.
I hope this goes away I feel completely disconnected to real life.

Today was the second time i kind of fell in love in a dream. The dream lasted a ton of days and basically it was my (almost) ordinary life, but i became friends with a friends and spent most of my free time hanging out with him. The dream ended after we spent all night talking at his house and suddenly it was 8 am and i was incredibly late to class. It was incredibly depressing to wake up and have to accept that he never existed.

I once had a recurring dream with a glare where I was looking up at a ceiling and watching full house on the TV. It recurred for like 6-7 months. Then, when I went to the dentist, that full house scene played and I was looking up. They were extracting 3 of my baby teeth.

I had others where I was walking around a prison gate at night. Then, a few months later I was hired as a CO. Two months after that, I was walking a fence-line at night because we had it go off on a certain sector...

I was in my room just vibing and decided to get comfortable. However when I whipped it out to readjust it someone said woah woah and blocked my stream. I didn't even notice a meeting was on let alone it had people I knew. I said it was an accident and someone said "don't worry, you're a nice people" but it left me with horror.

Once I was stabbed in my leg and than the guy who did it turned the knife and it was ridiculous pain. When i woke up i still felt the pain really bad (i was even crying).
In another dream, they shot me and it was the same effect. So I was wondering if it happened to you too.