I've been in similar situations, I am in a very similar situation right now actually. I know it's challenging, but try your best to think about the positive things in life. Think about the good things that could happen instead of the best things that have happened, are happening, and could happen. It's a lot easier said than done.
I said I have been in similar situations and am in a very similar situation. I was adopted as a baby so I never knew my biological parents, but my dad was murdered when I was 11, and my mom is sick asf right now. She can't afford what she needs, so she is dying.
Just know, no matter what happens, you're not alone. I will be here for you if you need to talk. I hope things get better for you.