- Meetup.com - If you don't find a community for something you want to do, then start one!
- Local sports clubs
- Volunteering
- Start going to EDM parties - pretty soon you'll see the same people. Say, "hi".
- Facebook groups for pretty much everything.
- Do what kids in the 80's did, and many still do: go to the local playground, and ask if you could also play with them.
You're not too old, you're not too "different". Don't be a pussy, and get out of your head.