I don’t know what’s wrong with me

I have very bad social anxiety and i hate all social interaction. I’m currently in a sport that requires me to have proper posture and i have to look straight when i’m doing everything which i feel is normal. But my issue is that my social anxiety makes me scared to look up because i don’t want to see peoples reactions to what im doing. I’m very scared of judgement and i don’t have anyone i’m friends with in my sport. I’m scared and i don’t wanna be in this anymore. every time i look up when im told i get very scared and get that feeling to just cry and hide. I feel like im acting like a child. My aunt believes I have ADHD which might contribute to it. But i’m not diagnosed and my mom doesn’t think i have it and i’m just the way i am due to my giftedness. I mean like i am ahead and i learn faster so im in AP classes. I’m a minor so i can’t get myself diagnosed so what do i do