Hi there. Social anxiety is pretty common. And it can vary in intensity from person to person. As I've gotten older, I've found that I can make decisions that work best for me. If I don't love crowds, I limit having to be in them. That's the great thing about being an adult. However, it is best to work on the core issue so that you can handle it when crowds and social situations are unavoidable. A therapist can do great work. And medication can be effective for social anxiety. Since you have a fight or flight reaction with panic, you may do best with a combination of medication and therapy.
I have a son who has sensory issues and crowded places are not his favorite. He becomes very anxious and he too has a fight or flight response. We worked on strategies. One thing that works for him is to have the ability to go off to a quiet location on his own. So, we look for somewhere when we get there that he can saunter off to for a break to regroup with no questions ask. We call it the quiet place. Heck, it could be the bathroom, outside the venue, our car, etc. He has chewing gum which is well known to calm and regulate people. (sounds weird, but oral soothing is helpful). He practices deep breathing--- you could try square breathing for example (breath in 4, hold 4, breath out 4, hold 4 and repeat). Opening and closing your fists tightly also helps to keep you calm. Looking for safe people to go to helps. And just knowing it isn't your thing and limiting it helps.
Oh, and I really love what paxiled said== get a handle on the anxiety so it doesn't become a chronic way of thinking.
Best of luck to you hon
Don't get hung up on labels, but that isn't necessarily what's called social anxiety. But it is anxiety, and I'd try and get to a therapist who specializes in anxiety to get a handle on it so it doesn't become a chronic way of thinking.