New tires and rent

Need help. :( I'm currently making a living from driving Lyft and one of my tires isn't taking air, so I need to get that one replaced asap. Plus my other tires are low and I need a little more money for bills. This goal of $250 is low balling, for sure, but would help! If I could get more like $500, that would be awesome-- but I know it is a lot to ask. Thanks for any help you can offer!