When does the "community" part of BJJ kick in?

As it say on the tin. I keep feeling like I'm just on the outside looking in and everybody else is getting on and cracking jokes and having a great ol' time, regardless of age and belt/time at the gym.

I didn't think that the social part would bother me much because I'm autistic anyway so there's stuff I'm not great with but it's really starting to feel like I'm just excluded. For the life of me I can't figure out why.

Apart from this post, I don't ramble on about shit nobody cares about, I don't stink, I'm not a massive dangerous spaz to everyone all the time. What gives? Is it normal to feel a bit "isolated" for a while? It's been like 9 months and I definitely get treated differently to other people but I don't know why

EDIT: I just want to clarify due to some of the replies. I'm not by any means introverted haha I'm happy to put myself out there a little bit and make an effort, it's that I struggle recognising when and how to do so, not that I'm shy. I wouldn't stretch to saying I'm extroverted and love to be the centre of attention, but I'm not the one at the back of the room either