Do you have a passport and an adult to travel with?
I don't think you can leave the country without one. Or, at least the country you're trying to enter won't let you in without one. Legally anyway. Believe me, I know how bad it can be at your age, I wouldn't relive my teenager years if someone paid me to. But, it does get better and/or you can just leave at 18.
Well then I guess I won't tell you how to get out of the country..
Kid if you see having issues @ home, you should talk to your teachers @ school. They can help.
If you are having issues @ home***
Your a kid, you need someone to look after you and guide you..even adults needs help sometimes too.
You could go to India...just call one of the numbers on the call girl ads on here and apply for a job.
Not possible on your own
Human trafficking. You can become a world traveler.
There is no reason a 13 year old needs to get out o the country.