Dear Joe,
I am sorry to hear that you are unhappy. Why don‘t you talk about these feelings with your parents? I think you should sit down and communicate with them.You should tell them what happened and why you are unhappy. I believe they will help you because they have more experience.
About your friend, I think you should call him up or write him a letter to say sorry.I hope he will forgive you and you’ll be friends again.
I hope things will be better for you soon.
Best wishes.