$0 down, 550 credit, but almost 6 year employment history.. what can I get??

So I’m young, just turned 22. I just finally got out of a really bad divorce where he stole all my money and wrecked my credit. Working on rebuilding my credit, though he put me in the hospital so I have medical bills on my report too I’m trying to pay off. I have one more payment and it’ll be cleared. Anyways, I’m in desperate need of a car, like I said I don’t have a downpayment, my credit is bad, but I do have a consistent work history of about 6 years, I work for the city. I can’t find a co signer. As you read I’m young, I’ve only financed one car which was totaled out (insurance and gap paid it off) but other than that I’ve never financed a car and I just need some advice or tell me what my odds are in financing another vehicle.