I think I dislike my 13 yo brother

There's something about his general personality that I don't like. He's kinda my opposite. He likes cars and soccer, he's on gf #3 rn (as a 7th grader), he goes to church every week (gaining him the appreciation of my mom who works there), and he uses a bunch of the same words and tone as my dad to the point where I'm just annoyed when either of them speak. He also sleeps wearing a plastic bead necklace and no shirt like htf do you do that isn't it cold on your chest? He acts so "cool" all the time too it bothers me.