This post is very rambley and I really don’t understand what you’re asking. If you mean things like basic life skills like laundry and stuff with money then there’s too many to list in a Lemmy comment in a succinct way. At times it sounds like you’re describing escaping an alt-right incel pipeline; if that’s the case then yeah, it’s still sort of difficult to answer “what you should have been taught” in a succinct way, and I don’t wanna assume that’s what you meant because it seems rude. I could be cheeky and say you should have learned to ask questions better, but that is really mean given the context that you seem to be going through a very tough time.

I’ll say this. You mentioned being in your late 20s. I’m 33 now. I remember through my 20s I consistently didn’t feel like an adult. I distinctly remember the first time I felt like an adult was when I was 28 years old. I don’t remember why, but I remember the thought entering my head again and I finally sort of thought, yeah, I feel like a real adult.

Your 20s are an odd time because you’re legally an adult and might even be living on your home but inevitably you’ll always have gaps in your experience with various things as a teenager as well as not having experienced many things adults consider to be universal adult experiences just yet. Know that a lot of people in their 20s feel this way even if they’re better at hiding it.