You could do Satanism but not actually worship Satan since he doesn't exist either but rather, I believe it is the Satanic Temple(look it up). Their credo is really good, like treat people equally and with kindness, that sort of thing. I think they formed to sort if troll Christians. Like if Christians were able to put a nativity in the capital, the temple would also apply to put something in the capital.

Anyway, another idea would be to join a maker space, if you like to use your hands.

Personally, I'm into cars so I joined a club and I race on weekends and go to car shows. I think anything that puts you on contact with like minded people will help you meet people to make friends. Good luck.