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Dear Ben,
Thank you very much for your letter.I hope I can offer you some useful suggestions. You say that you fell stressed with schoolwork and you have a lot of homework to do.Thus you hardly have any spare time for your hobbies.I think you have to make a plan.It will be a good choice to make a list of all the homework you have to do.Then work out how much time you need to complete all.This will give you an idea of how much free time you will have for relaxation. It seems that you often quarrel with you parents.Maybe you can chat with them and get help from them.The best way is to show your parents your progress. You say you are afraid of being laughed at when you don't do well in study.Please pay no attention to those students who laugh at you and be confident in your schoolwork. I hope my advice is worth taking.
Best wishes.
Your friend