I mean I have social anxiety, the main thing for me that made me distinguish between just being anti-social and social anxiety was the physical anxiety symptoms such as heart palpitations. At the end of the day it might not be social anxiety, there might be something else going on causing you to feel like this. I think it’s worth just clearly writing down your symptoms and thoughts in social situations and talking to a doctor. My symptoms are not everyone’s symptoms. Another thing is irrational beliefs, when I talk to someone I assume they are judging me and they don’t like me/think I’m a weirdo/think there’s something wrong with me. I also do avoid social gatherings like it’s cancer, but lately I’ve been really trying to go to them as I do end up enjoying them. I think no matter what your mind is telling you social anxiety or not, you should challenge yourself and do things that your not confident with.