Welcome Anon!
I can tell from your words that you are strong. A strong personality is a good thing to have. I was having the same feelings as you at your age but I was far too meek and afraid of displeasing my family.
Many wasted years later I got myself free. These are the best years of my life. The pure clean feeling of using my brain to think my own thoughts is the best feeling in the world.
Many people who are young struggle to be free to be who they are. For some it is their sexuality, for others, it is the country they live in and for many, it is their family religion of origin. Believe it or not, there are many religions that treat their young people badly - Jehovah's Witnesses being one.
Someone above mentioned exercise and fresh air, that is like medicine for your heart - do what you can to move your body and your mind will follow.
I'm so glad you are here. In one way or another, we all relate to what you are going through and want to help you. We are all success stories growing at various stages because we have taken that first step - a quiet resolve to cherish ourselves and create a better future.
You can be yourself here and we will listen and respect you.