How can I explain how miserable I am?

So my parents are financially retarded. They make a bunch of mistakes, and I always have to suffer for them. I'm 17. We live in the middle of nowhere, so I can't go get a job, because I don't have a car. And we live with their friend in a 3 bedroom trailer. Keep in mind that there are seven of us crammed in there with two dogs. Neither of my parents want to work. I dropped out of school because of bullying. My parents don't buy me clothes or the proper things to groom and be hygienic with. The only thing they do buy is food, so I'm a little overweight. And I'm miserable. Their friend is so annoying. He wakes up in the middle of the night and makes a ton of noise, but if we do that he throws a fit. And we pay rent. Even though my parents don't work, they get child support for my siblings and I. I'm sick of being miserable. Help?