Ukuleles are so punk rock. -Tyler Joseph
You are beautiful. Don't believe the lies inside your head. You are strong. Even when others show off. You are popular. No matter how many friends you have. You are important. God made you and He has a plan just for you.
They're not friends.
TELL the girl who hits you it hurts. Tell her to stop.
This ^^ and I am sorry that you are going through this. I think you should either tell them how your feeling and try to resolve it so they is not treating you like this, or walk away and you will find new friends.