A neuro divergent's childhood.

I had a very difficult childhood, I was so dumb in the preschool but then again somehow got really smart later and then again went downhill. I was constantly in the state of confusion like what is this,what is that ,what is happening. I had 100 different things running in my mind but none of them would come out. One of my biggest problems as a child was I never understood vague instructions, my mother would yell at me and scold me and sometimes beat me if I asked a follow up question and my dad would also get really angry if I didn't make eye contact or looked away or touched something like fidgeting,when he's speaking. I was constantly called as "lazy", "failure" "nalayak". Even now when i tell my parents that this not understanding blatant sentences and wanting clear and easy instructions is not my fault and it's ADHD they still get angry and tell me it's not real.They still think I'm making this all up. I felt like a zombie all the time like as if I don't belong here. When I was 8-9 i even made up a theory in my head that I'm not a real person and I'm an alien's experiment that's why I don't understand humans(I used to obsessed over aliens and alien movies). My teachers hated me because I never did a single homework but still got good marks. I got bullied in highschool. But i never understood why everyone thought I'm making my life difficult on purpose. Im posting this here because i hope people who faced it understands better .(apologies if any grammatical errors)