Going to a concert alone? good idea?

so, I was gonna go to Billie Eilish concert with a girl I met but suddenly she cant go anymore however I do I have an extra ticket but her parents said no either way. I'm a minor and idk if it's a good idea if I go alone? my parents wouldn't want to go either way. but at the same time, I would love to... show more so, I was gonna go to Billie Eilish concert with a girl I met but suddenly she cant go anymore however I do I have an extra ticket but her parents said no either way. I'm a minor and idk if it's a good idea if I go alone? my parents wouldn't want to go either way. but at the same time, I would love to see her! again, would it be a good idea if I still go alone?? plus, I don't have any friends to go with...?
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