I dont know how to deal with GCSE music anymore?

I really want to drop gcse music. i spoke to my teacher about it and she said its not possible since ive nearly done gcse music for a whole year... She said to try and get involved more attend singing lessons and chior but i really dont enjoy it anymore :/ depression has completely taken over my enjoyment of singing anymore. also Lonliness is a big factor in me wanting to move as well....because everything has changed. most of my ''friends'' dont really care about me they never ask me to come with them to work with them or anything and most of the other people already have their friendship groups. Yh i dunno so much has happened. We have to perform in about a months time but i just dont even look forward to it. maybe the fact that certain people in the class make it harder for me to perform too.. due to other difficulties ive faced in the past few months. But i dont know what to do everybody :/ I cant keep coping with this because music has made me really unhappy. I enjoy the compulsory subjects more than music. And i know ive only got ''another year'' and i should just suck it up but its making me really unhappy. And usually unhappiness i grow out of but i wish i never picked it now :/ is there anything else i can do? i only spoke to my music teacher. about this. I dunno what to do everybody :( help me please.