I am a socially anxious person and have managed to go to lots of concerts alone, from 10 people at a bar to 72,000 seeing tswift. It’s awkward, I won’t lie! Before a show and between sets it feels weird to stand around alone. Yes, nobody really cares if you’re alone (and other people will be alone too), but anxiety doesn’t know that!
But you probably have a phone to look at and that helps a lot. you also could talk to people and they’re probably nice but I can’t really speak to that!
Once the music is playing, everything is fine! But it’s important to say that I’m a cis white male and my experiences of being alone probably are very different than otherpeople’s.