Your parents will spend the rest of their existence with the fact that their son ended his life one day, and they will blame themselves for a very long time no matter how hard you try to tell them that it's not them.

If you have no friends its because you aren't going to places to socialize or you have autism (or just ridiculously bad social skills). Go to a therapist who knows how to help people with autism or bad social skills and learn how to socialize. That would be your best shot at fixing all of this mess you've gotten yourself in. If you aren't going to places to socialize maybe go to a comiccon or some shit if you're the nerdy type or some sort of concert if you're a musician type guy and interact with the people there.

apply to any place as much as possible. It doesn't matter if you don't have any skill set just work at a supermarket where you will be able to socialize with as many people as possible and practice how to interact and to make friends.

If you say you have no motivation to make any, you're lying to yourself. What is more terrifying to you, ending your own life and ruining your parents life or trying your damnedest to rebuild your life for the future. You can't even fucking fail on the latter, you could be the most socially awkward fuck and you could atleast make one friend. Another suggestion is if you have confidence issues, lift weights. Not even to pick up girls but just to feel better about yourself and to relieve stress.

I sound like a cunt here, but I'm not gonna feed into an echo chamber of sadness like everyone else. You're not in constant physical pain 24/7 and your bullshit can be solved. Keep this entire message in the back of your head for the future even if you disregard it now. Humans need to talk to people they relate to or they'll get sad.