I want to report my friend who hacks in a game
Why are you ready to report him now?
Because he's still at it. I hate cheaters
You shouldn't tell on a friend. Instead, talk to him about his behavior and try to get him to stop so he won't be in serious trouble.
He's a loser and I'm better than him so I deserve to do it.
That is not a good reason to tell on a friend right away. You should try talkin to him first. If that does not help, then you should take the next step and report him.