Welcome Anon,
I really feel for you in your circumstances, I was born in, and in for decades, when I left I too had thoughts of suicide and sought the help of an excellent Therapist, I was lucky, many people in those professions do not quite get the problem, but even so, any help they can offer should be taken. They are trained to help you to not only cope, but to find your way out of Depression, and to control, or "bury" it forever more.
I am so pleased and grateful I got that help. Within a short time I was O.K again, and I experienced for the first time in my life what real, lasting happiness really was ! As I grew as a person, I became happy in my own skin.
You have a wonderful life of freedom in front of you, you will meet many lovely people, make great friends, and probably fall in love. We only get this one life, as far as we know, it is down to us to work at making it the best we can for ourselves, and make it our aim to make the life of others pleasant too.
All the very best to you ! And come back and Post again, we are here to support and help you through this difficult period, which will end. One day you will feel, and say to yourself, " Isn't life just great ?".