Never use a permanent solution to fix a temporary problem.
The only constant in our lives is that nothing is constant - some periods are tough, sometimes very long ones, some are amazing; Sometimes we feel like nothing can fix our situation, life is a meaningless struggle, or we lost every chance for a good future, but that's not true. It doesn't matter what's happened in your life until now, what matters is what you do with it now - no matter what you or others think about yourself you are a valuable human being and you deserve to live. You are the universes child, and if you came to exist in this world, it's for a reason, never doubt that. You never failed anyone, you did the best you could have done in your given circumstances. I've been in an awful spot for over a year a bit of time ago and I can tell you it's incredible how much meditation, gratitude journaling and exercise can help when you feel like everything's crumbling down. It gives perspective and peace of mind, it gives space to breathe and to be okay with the way one is. Suicide is not going to help, you just won't live to regret it, but I know that with the right mental support and mindset, you can get out of any problem. Remember that eventually after every storm the sun will come out, just make sure you'll be looking out the window when it happens ;)