Need a PC so i can support my mom

Hello, I'm from Pakistan. I really want a new pc to work as an editor or an AutoDesk Maya artist to pay my mom's medical bills. I am currently 16 and im still in high school. I really like editing and graphic designing so I thought if I had a good pc maybe I could make some money while still continuing my studies. I really don't want to leave my study behind cause I know that I can do it but I have to do something for my mom as well. I tried working in a call center at night shift by lying about my age and telling them that I am 18 but later they asked about my high school diploma and then they later found out about my real age and they kicked me so yeah really hard to find a job when u are 16. About my dad, he divorced my mom when I was born and left without a trace so I really think that all this happened because of me why was I born if I wasn't born my mom would have lived a great life. I can buy a new pc for like 100$ or 50$ cause I don't want to be too hard on you guys and im really sorry I really need it. sometimes I think about suicide cause I can't see my mom suffer I really can't it just breaks my heart. It's really hard for her and I can't stop but cry about being such a shitty son please just a new pc so my mom doesn't have to work while being this ill.