You don't even want to seek out people who share particular hobbies/interests of yours?
As I said, Meetup.com is free if you aren't organizing your own group (although some of the groups themselves might charge a fee).
Even many NT's have difficulty finding new friends once they are no longer in school. That's why Meetup.com exists (it isn't just, or even primarily, for autistic people).
If you're hoping you will just find friends "naturally" by being "around the ordinary crowds", you're probably setting yourself up for a lot of frustration. It's not impossible to make friends that way, but it's much more difficult.
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- Autistic in NYC - Resources and new ideas for the autistic adult community in the New York City metro area.
- Autistic peer-led groups (via text-based chat, currently) led or facilitated by members of the Autistic Peer Leadership Group.