You’re focusing on external issues, but you should consider that the real problem could be depression. I won’t deny that unemployment and poverty can be extremely painful, and it’s understandable to feel hopeless in your situation, but this is a mental state. You can recover from depression even if you continue to have financial problems, and in fact recovery could help with your job search.
I don’t understand why you are so dismissive of professional help. Have you ever tried therapy or antidepressants? Have you ever been hospitalized? You wouldn’t lose anything by trying, and you could gain everything.
I’m not asking you to reconsider your decision for the benefit of your friends or family, but for yourself. Once you’re dead, that’s it forever. You don’t get another chance. And if there’s happiness or new experiences in store for you later in life–experiences that you cannot imagine now because of your depression–you will have missed out on them.
I also thought of suicide as rational decision, but that was because my thinking was distorted by pain and depression. Now I’m happier with my life than I’ve been in a decade. If I had given up, I would have missed out on a lot.
Have you spoken to any of your friends of family about your plan to commit suicide? Does anyone know how depressed you are? If they don’t, then I think you should talk to someone as soon as you can. You don’t have anything to lose by putting a serious effort into getting better. You might think it’s a waste of time, but do you have something better to do? At least it would be something different to do with your day, right?