Sounds like you're describing dissociation. I'd talk to a therapist if possible. It might be triggered by trauma or other condition as someone else mentioned.
I find somewhere to be more alone. Go outside when everyone else is inside, or vice versa. Go to a restroom for a bit (even if you don't have to go, just being solitary for a couple minutes helps.)
At home, I watch YouTube or play games. Basically just fall back to "normal" activities.
As someone who didnt play the games, I just found out yesterday through a challenge video.
@Oka
@lemmy.ml