meetups

The meetups that I go to I don't get much out of them.  When I try to say something to someone they typically don't say much and go off to talk with someone else as if I don't exist.  The meetups I go to are trivia events, furry meetups, and some graduation parties recently.  I see people enjoying their mates, as usual, at meetups and they spend a lot more time with their mates and other couples than me because I'm the odd one out with no partner.  The people at the meetups also comfort others in distress far more than they comfort me even when I'm in distress.  I literally feel like I was not supposed to exist or I just feel invisible most of the time when going to meetups.  I then become sad and depressed which puts me into a non-social state which makes the situation worse because I would not be talking anymore.