my life is a complete mess how can I change this?

I am 19 and the past 6 months I have been depressed and confused. I passed my A-Levels and ever since I did that I have hardly left my home, I lost all contact with my friends and have felt very lethargic. I have always been bullied and I often self loath and I don't have any friends, I have lost all my social skills and I have never had a girlfriend because I am unattractive. I am very angry at everything and I have no idea on how to live the life I want to live because my family don't live the life I would like to live. I am everything I don't want to be, unattractive, angry, lost, confused and I don't know how I can change because I have nothing to give me change
What should I do to bring myself to feel good about my life