I literally only remember like the outlines of events, I don’t remember like the colors of clothing, or exact words of converasations, or like smell of the room. How the f do people remember that stuff? Like, no way they have photographic memory, do they just partly invent detail?
On a related note, I don’t remember the best resources I’ve come across, but here’s something for a bit of an idea:
https://en.wikipedia.org/wiki/Memory_error
Legally, there is the concept of contemporaneous notes in many countries. Meaning if you write something down shortly after the event occured it can have legal validity.
There is also hypnotherapy, EMDR, and other forms of therapy, where many people can access memories that they couldn’t. I was surprised myself how many memories I could access with EMDR.
I find the concept appears to be similar to meditation and lots of sensory information + association. How stuff felt, sounded, smelled, where you felt in your body etc.
Less related, but there’s also Method of Loci etc. to remember lots of very specific things