I'd say to broaden out from just one hobby/sport/group at a time. And give it a lot longer than two months.
I feel it's a numbers game so you want to have more new people every month really.
If you're just with the same 6-10 people then often things will fizzle out, or you really get on with someone and they're moving city or having a child...
I've found I've had to pick up the pace and find that middle point between "turning up once" and just sticking with one group.
Different groups have different vibes, so book club in city A might be much friendlier than book club in city B.
Try new ones each month if you can (it can feel like hard work or a waste of time or full of weirdos so be patient and have low expectations).
If you can schedule so you're a "regular" as in showing up to a few Ok groups over 6 months, I think connections start forming. And it keeps a good flow of new people. So it's not too intense or claustrophobic.
I've always preferred smaller groups and deeper intense connections, would define myself as introverted.
However, I think making by making a habit of regularly meeting more people (even at a superficial level, or if I don't feel I have loads in common with them) it gets me more socially confident.
And I "appear" popular and am going out more, so it's a knock on effect!
I'm starting parkrun soon as my running has tanked so did the Couch to 5k over winter 💪
Before I would attend very occasionally so wasn't giving myself enough time to be a regular ( To be fair I wasn't after making new friends at that time).
Now I'm more open to friendship I'll try to go once every 2 weeks or so.
Like pp say it may even just be a few friendly chats which don't go anywhere, but it's something I enjoy anyway.