OP,
Don’t listen to the people that tell you that this is where you will find friends. That is not going to remedy the situation, it will temporarily relieve the pain, if anything. You need to look inside yourself and address the problem at the source. Why do you feel this way? Can you pinpoint things your family does that make you feel like you are second class? If you can, reach out to them and tell them how you feel – I guarantee it will strike a chord with your parents and they will realize that they have been doing something very destructive. Then with the backing of your parents, you will IY’H turn your life around very quickly. You sound like you are still very young and have your whole life ahead of you, please don’t give up on life. And don’t think that if you seek help you will just be put down more. Speak to a Rebbe, maybe speak to a professional, I am sure they will not put you down.
Hatzlacha Rabba.