I'm really sorry to hear this.
He said they would need the title to my vehicle worth at least $6,000 and a co-signer. My mom can't co-sign because she's on Medicaid and there's nobody else I can ask.
If your car is worth $6,000 and it's paid off, then I would think you would be able to get a pink slip loan on it without a cosigner, regardless of your credit history. Because the collateral is your car. But I have no clue what the rates are on those. It might not be the best idea to go that route.
Have you tried answering a roommate-wanted advertisement?
If you can find a place at least temporarily that's cheap, then you could transition to this $325/month apt or similar in a couple months while you save up money.
My mom keeps telling me I'm way to stubborn and when things aren't working I need to learn to give up sooner.
If your goal is to live where you are, I wouldn't throw in the towel. But if you are interested/open to moving back home then there's nothing wrong with that.