Dear potter:
You told me that you were lonely because you don't get on well with your classmates and quarrel with each other often .I will give you some advice .
First ,keep your temper when you are angry.Second,you can help them as much as you can in your everyday life.Third ,when you all have time,just play basketball or pingpang and so on together.Sport is a good way to strengthen your friendship.
Just try and do it ,hope you will be fine soon.