I got in a wreck and need a new/usea car, but dont want a monthly payment. i know ill probably have one...?

but dont want to pay over $150 a month. I dont have a co signer. My credit score is 682. its not to bad. how much do u think i should take as a down payment so my monthly wont be so high? or any other suggestions??!?! i need all the help i can get. thank u so much!