What do you think i should do?

i find it really hard to get out of bed in the morning because there is really no point. my life isnt any good, i barley have any friends, im no good at starting or continuing conversions. I cant talk to girls to save my life, ive been called ugly so many times my confidence has just gone down the drain, ever since ive been feeling depressed my marks have dropped severely (from like 90 to 50-60). Im graduating this year ( in gr 12 now) and dont know what im gonna do with my life, i dont find anything interesting. My parents always fight, im always getting yelled at my sister doesnt speak to me even though we live together. I used to take kickboxing to boost my self confidence in talking to girls, but after almost 2 years i figure it hasnt helped me, so i quit. i dont know what to do, talking to someone is not really an option, can someone please give me there opinion in what they think i should do ?