How do I tell my sister “no”?

So my sister is super into kpop, and I went to a concert last time because she didn’t want to go by herself. And I hated it!!! I was like one of ten guys there. And some girls behind me were talking shit on my outfit. Like it brought down my confidence down and made me self conscious about myself. And I seriously felt like a freak of nature there because I keep getting stared at! And during the concert, the girls kept screaming till the top of their lungs, and I swear I got some permanent hearing damage from it! It’s like hearing a woman yell at you, but worse, because some were literally crying from the excitement (cringe). And it lasted for HOURS. After a while you can see why most of these women are single (especially the ones who shit talked me). And I hope to never go to one again. But my sister bought me a ticket to another show 😫!!! And I seriously don’t want to go! Like why can’t she just find a boyfriend? Like I love her, but I don’t want to do that….

How do I tell my sister “no”?
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