Anxiety, including social anxiety isn't your "fault" any more than the number of claws / fingers you have is... not everyone is so idiotic as to judge anxiety so harshly... maybe feel sorry for those narrow minded jerks

Some people, as they "mature" become wiser and less likely to make stupid judgements.. if not, as you grow older maybe you'll choose to avoid them

I'm sorry this event didn't go well

Could benzos or something help for any future event?

PS it's possible that people weren't judging you so much, I don't know... some people suck
but some people do have empathy for the diversity of other people..