Hishashi, I believe in God(Allah-since, I'm a Muslim). However, I have never been very religious. I'm kind of trying now, though. I'm an open minded individual but I do have and respect my beliefs. And obviously, have learned and still learning to accept different things that come on the way.
I don't really follow what I'm going to say here-but I did for a few days!- Praying in the Islamic way can be incredibly beneficial to your mind, body and most other things. Being on time, being relaxed, being good, being mentally and physically, healthy etc etc. Can't really comment on other religions, though-since, I've never tried them.
My advice to you would be to keep in mind that the next few years of your life is extremely crucial. Focus mostly on your education,physical and mental well being.
The way you are atm, the people who are close to you, are very lucky to have you
You're a good kid
Also, far more intelligent and sharp than I was at your age
I hope and pray, that you find all the good life has to offer! That you find what the good of your heart desires.
Best wishes!