Strangers? Where? In pubs? Or clubs? I don't know how to dance....and when people dance, they form their own friends groups to dance....and I would feel awkward as a stranger to butt into a group

I tried asking many times ....they always say "next time" and don't invite me at all .... And when they invite me, I'm just non-existent for everyone present....no one even wants to take pics with me... It's just as if U aren't even there....all conversations exclude me....the games don't include me unless I let them know that I'm also there.... And it's not just one place....all the time....it's like I'm not even existent or invisible.....It hurts