The kind where if you have to be around people you feel more comfortable in a group than with just one other person?
I get nervous around "dead air" if I'm with people so if I'm the only other person I feel pressure to be interesting and it's exhausting. If there's a group of people it's not so bad because it divides the responsibility of being entertaining around all of us so I don't have to worry if I'm boring. I can just chill and let other people talk.
Plus I find I'm better at bouncing off of others than initiating conversation.
It's just something you learn to get better at, tbh. I had a pretty lonely childhood with extremely inattentive parents, but post uni, customer service jobs, and other stuff I've become a decent conversationalist. Practice makes perfect comrade!