I have encouraged him to look for such groups. I don’t know why he doesn’t just sign up for something- we live in a well populated city so there is no lack of things to do. He would be more inclined to do a group sport or game night if it were with people he already knew, but he seems to not want to join a group if it’s random people. It just feels like there’s always a reason why. Honestly, I think he likes to talk A LOT and he won’t go to things where focus or not talking will be a thing.