Can I hate my peers?
Maybe. Why do you hate your peers?
I'm sick of them being so mean to me.
It is okay to like some peers.  It is especially okay to not like them if they are mean to you.
My peers are not bullies. It's just that they beat me up and stuff.
It does sound like they are being bullies so it is okay if you don't like them. You don't have to like everybody especially people who hurt you.