Spent a month going down rabbit holes like this. I'm a very logical 42 year old, but I saw what I'd call a "glitch in the matrix" really it was just a common mandela effect but the kicker was it flipped.

Scenario:

Read on reddit about the flip flop.
Check current status.

Movie Apollo 13: Calm and collected Tom Hanks says: uh Houston we've had a problem.

My childhood memory of this is more Frantic Tom Hanks: "Houston we have a problem".

I discussed this w/ my wife, and she watched it as well. She remembered the same as me.

Two days later, I'm reading a list of mandela effects one of which said:
Apollo 13 Movie: Previous: Houston we've had a problem, current: Houston we have a problem.

I do a double take, and think that's a typo. Off to youtube to verify. It's now Houston we have a problem.

I wake my wife up at 6am to ask her what it said the other day and she tells me: Houston we've had a problem.

this disrupted my entire view of reality as at least somewhat 'solid/stable'. Led me down lots of research into quantum mechanics, physics, etc... as well as topics on what consciousness even is, or the possibility of living in a simulation.

I'm thinking simulation makes the most sense, and that reality is some sort of consensus mechanism like blockchain. What the majority 'remembers' becomes reality for all... though, it seems when polled a majority of people remember Fruit of the Loom having a cornucopia, and other than a trademark file from 1974, there was never any cornucopia associated w/ the company....

Tandem aside, that made me try /r/castaneda (dark room gazing), meditation, mindfulness, neville goddard/law of attraction, reality shifting, tulpamancy, etc.. just to see if I could maybe find a 'chink' in the armor of reality. Only thing I found was obsessing over that was ruining my life, and mental abilities except for the meditation practices, but I think the acts that supposedly bring on those scenarios (lucid dreaming/meditation) instead brought me to a realization I don't need those things to find happiness - except meditation maybe I still do that from time to time, and binaural sleep music occasionally for a deeper sleep.

I found the oddest stuff with /r/castaneda doing darkroom gazing where you spend 4 hours every night in pitch blackness, and try to see energy and eventually you do. Though I saw a huge spider while practicing this crawl up my leg and dissipate and I quickly stopped. I was awake, and it wasn't dark but it was after a week of practicing.

I think there's still stuff to find out, and I'd like to still pick around the edges of reality, but I don't want to be homeless either, and we still need to and deserve to have happiness here, and to do that we must be present.

Donald Hoffman who's done a number of talks/interviews on his theories and proofs that we are living in a simulation basically says that those who 'win' at life are those who don't 'know' we're in a simulation or speculate, something to do w/ evolution. Makes sense that you'd be happiest in a fake world if you didn't know it was fake, once you figure that out, how can you just go back to life as normal, or want to? Since, I have to live here, and have kids and a family I figure it's best to just keep trying to 'win' than focus too much on odd side effects of reality.

Interested in Mandela Effects or reality changing? I'd suggest /r/retconned for some interesting takes. There's a weird venn diagram of people who believe in ME's that includes religionists and less-theistic more-scientific people there's very weird fringe theories based on the bible, and then a bunch of people discussing quantum eraser experiments and how to run experiments to track changes to reality over time, some results that use md5 hashes on images that represent the change have actually seems somewhat interesting.

tldr: I know what I saw, and my wife saw it too, and it drove me mad, but I came back from madness to realize we can't just dissociate from reality even if reality is not 'true', because it's the only thing we have in life, and it's still a miracle even if it's fake.