I suck at everything I do.?

I mean literally everything I've ever tried. I got bullied from been 11 til about 14 which has made me loose confidence in myself, probaby making everything harder as I lost confidence in myself because of them. I've tried sports; I failed. Academically, I was average. I don't have a lot of friends but I don't care too much about that. I love music but I've never sang in my life. If I open my mouth to sing nothing comes out which shows I'd be no good as a singer (Even though thats what I'd love to do more than anything). I've tried Guitar and piano in my music lessons but thats back when I was depressed about the fact I couldn't do anything without someone insulting me so I didn't bother trying. I'm not confident in talking to people so getting a job is going to be hard. I don't want to see a doctor about depression or tell anybody about how I feel cause then I would basically be admitting how pathetic I am. I thought about suicide but realised it's poitnless but I have to ask what the point in life is if I have nothing and no one? Is the point of my life to suck at everything and just constantly be in pain?