Need advice on vehicle repairs with no job, money and bad credit.

Hello, my name is Geoff and I never thought I would end up in life where I am. I just got laid off from my job of 20 years, a care giver. I have many debts and bad credit and absolutely no money! My 1997 toyota needs a fuel tank, oil change and different tires. I am not asking for a new vehicle, just a break! At my age nobody seems to be interested in hiring me. I live in a rented mobile home and have no assets. I know a man my age should have planned better, but I didnt and here I am. This is my reality and I have run out of any answers to my delima. If anyone can offer me any advise I would be so grateful. I did just start drawing unemployment , but in Tennessee thats not very much. My rent, utilities and required medications consume my income. PLEASE HELP ME !