Idk what to do anymore.

I don't even know where to start. I'm seriously at the point where I feel like there is no hope for me and like if I died right now no one would care. Like sometimes I wish that when I go to sleep I'll just die peacefully. I've even prayed to God "please God, I'm weak. let me come home to you. I can't take it on this earth anymore" I wanna run away but there's nowhere to go and my "parents" can't find out I'm feeling this way because that would just cause horrible problems. There's no escape...I don't know how to go on. Someone please give me advice to keep going. How can I be happy ??