I feel you, man. I had never been able to make connections in my entire life and so I always sought it out online.
A decade or so ago I was hitting up forums to interact with others. Now, I use Discord. A word of warning…Discord is primarily filled with young teens, which can feel a bit awkward and creepy if you’re an adult. And I just don’t relate to problems that teens do anymore like school and the like.
I specifically search for communities like 18+, 21+, 25+, etc. servers so I can relate to everyone more and feel more comfortable. There are some websites out there that provide listings of public Discord servers. So I generally google around until I find ones that look interesting and try them out. You might have to join quite a few until there is one that suits you, but I’d recommend it.