Stopping trying to stay alive sounds pretty neat unless you really enjoy life, but you have to keep in mind that you can only succeed with that once.

I‘d recommend trying to lobotomize yourself with a few psychopharmaca prescribed by a psychiatrist first. What‘s the worst that could happen?

You probably haven‘t tried everything yet and you can always try to stop trying to stay alive at a later point.

You should probably call your countries crisis hotline. You can ask google how to commit suicide to get the number.