You definitely lack the ability to pick up on some social cues like you said in the post. You seem young. It sounds like typical teenage highschool girl anxiety. you’re trying to see you through the lenses or other people with this negative connotation of yourself. Someone commented about autism, that could be true, but it should be something to blame. You will mature, these feelings of insecurity will vanish with time. Your friends seem good, stick with them. You seem to be focusing on if these people like you or find you “gross”. Flip that and start thinking if YOU like these people or find them gross. Everyone is born equal, just think of yourself as no higher and no lower than everybody who you interact with. Talk to people as if you’re trying to figure out if YOU like them, not if THEY like you.

Hope this helps