nostalgia will be the end of me

im 19 turning 20 very soon, and im disgustingly nostalgic for elementary school (grade 7/8 specifically). i was supposed to graduate gr8 in 2020 which clearly didn't work out, so i was hung up on the "no graduation" thing for a couple years but i dont think its about that anymore. im over the fact that i didnt graduate because its elementary school and my high school graduation was more than enough, but some part of me just wants to go back. i dont mean "i wish i was 13/14 again" i mean physically go back to that school building and talk to the people there. i want to talk to old classmates and teachers but i dont know whats driving this because i honestly didnt get along with a lot of my classmates (i was a really annoying 13 year old) and my anxiety was so bad i barely spoke to the teachers. in fact if i did get the chance to talk to them they probably wouldnt even remember me if it wasnt for the fact that my older sister has basically tarnished our not-very-common surname with her misbehaviour. its silly to say this out loud but ive had dreams where im just back in my elementary school, not as a student but just visiting. im yearning for the chance to be nostalgic over that time of my life. just walking down the hallways, remembering the dumb things i got in trouble for while physically being there to relive the moment. i still talk to some friends from elementary school, and it seems that no one shares this feeling and i dont blame them because what university student halfway through their degree desperately wants to go back to elementary school? sure some of them might be a little salty that we never got that field trip but i dont care about any of that anymore, i just want to go and take a lap inside the building and update some people on my life possibly my school used to host a bbq in the summer and many old students go to visit and have fun. i was planning on going a couple years ago but my schedule didnt work out so i was thinking about going this year. but searching up the event calendar, its not there anymore so they probably stopped doing those and ive lost my only chance at ever fulfilling this desire of mine and now i just have to live with this feeling for possibly forever