I'm a guy. Should I go to formal with another guy if I want to?

I would

can't read the end of your question, but I think it says "if I want?" The answer is YES!! If you don't live in a safe place though, put your safety first; unfortunately there are a lot of crazy people out there...

Yes you should I go with girls to dances all the time

But it shouldn't matter what other people think. If you want to go with a girl, then go with a girl. If you want to go with a boy, then go with a boy. If it makes you happy, then do it.

@KingdomHearts💛💙❤️ u have a point