Cut all unnecessary expenses out, sell stuff you don't use or need anymore, cut a few subscriptions out, keep one around if you *think* you can afford it but I suggest getting rid of all to survive.
Top priorities in this situation is food and transportation after rent is paid. Second job is likely, because even if you can get another 20 hours at the other job, you're now over 24+ hours. Still not enough, but you would more than likely be able to get rent paid. To anyone that is in desperate need of money, definitely look into starting up a service business. My trade happened to be Car Detailing, but if you're good with web development, do/did some coding at home, can edit pictures to look better for clients all across the nation, do that. It's the most valuable form of business because you are providing a useful service to someone who finds it worth it to hire you. It's a win-win, you trade your skills for money, and your client gets a valuable service.
don't need to pay anything for social media marketing, just start up a facebook page and post to local facebook groups and classifieds. If you end up making some money and you decide to put it back into the business you can always buy an ad to advertise yourself. Where it went wrong for me was working at Target and being so dead and drained by the end of the day I would dodge potential clients, not show up to an appointment, and other things. It's physical work but being mentally drained feels 100x worse and makes me want to lay down and watch Youtube.