
Could just be something with how approachable you seem to others? They might be interested in meeting you but not know how to interact, or think they’ll get rejected. Body language, the part of the room you stand in, facial expression etc can all play a role and have nothing to do with how attractive you are. Also do you ever go up to people yourself? And how do they respond?
Ugh I’m so sorry, you seem like such a sweet person. And the fact that your friends and the people you approach respond positively doesn’t make it seem like your fault. Not sure what advice I can give besides keep trying, I’m sorry. Have you ever asked your friends to maybe watch an interaction and give feedback?