Haven't RTFT but I think it's fine.
I used to be fairly intense when it came to friendships, I liked the look of people or I got on with them, so then I "friendship pursued them" 1-1.
I felt uncomfortable/anxious in group dynamics so I preferred the idea of "my" friends.
I think I was swimming against the tide though and probably coming across as too intense/needy/possessive.
Most decent mainstream people probably don't have lots of 1-1 time for new people. Especially at the working stage of life.
With work, partner, family and self-care....its a bit too much investment prioritising a new person (even if you really get on and enjoy their company).
It's more the social norm to hang out a bit, get to know people, and see them on a situational/pragmatic basis.
I'm in the same boat myself now - I'm quite happy with my life, I have social groups I drop in on. I've learned to control my anxiety in bigger groups (journalling or breathing exercises immediately after!).
OP unless you're all at the retired stage of life, or you're all trust fund babies, I think it's fine just hanging out in a group rather than immediately prioritising setting up some intense 1-1 thing.
Don't overthink it, just turn up, try to chill, don't worry too much if things don't pan out.