My whole life i've always been a social outcast. I have trouble looking people in the eye and when i try to have a normal conversation with people they always end up ignoring me shortly after someone else joins into the conversation. Whenever i greet people they say hi back in a snarky tone. Im 5'7 have a decent physique, good clothing style and have a good looking face. Why do people always end up ignoring me but they don't ignore the uglier guys even if they are the same height as me. Do i have autism because i have no clue what is wrong with me. Usually the guy who is the alpha of the group ends up amogging me and ignoring me. Yet i get ioi from girls but after a while they also end up ignoring me since they see everyone else ignores me.

Im not asking this out of pity i don't understand why its always me who gets ignored. And i would like some help on what im doing wrong.

Also 1 on 1 people actually like me and get a good impression of me. But as soon as they see me getting ignored in the group they don't want anything to do with me after that.