When I go to the cosplay or carnival I always find myself hating it.
What are you expecting from cosplay and carnival?
I would like to see something cool but not charmingly ridiculous
It's okay not to like things that others do, and being your own person is important to your identity. You should find things that do stimulate your excitement and engage in those activities instead.
I hate that you are making so much sense right now.
It's because you know that I am right in that no one is expected to enjoy every popular thing. Some of it just won't be understandable to you and that's completely valid.