meeting local communities/people with similar interests?

hey guys, do you guys have any advice about meeting like minded people (preferably offline) and finding a sense of belonging?

for reference, I'm a young adult mid functioning autistic male, who likes oldish anime and retro and import games. i have a big family but i dont have much in common with them, and my city in the east midlands is small and dosent have many places to go to meet people.

I've tried discord but I'm not savvy enough to join worthwhile communities, and the servers i do join are cliquey and dominated by a few regulars.

if i could get any pointers id really appreciate it! thanks