Right now I think your first priority is to get another cubicle job. You have little buffer or room for error. Given that you have experience in that field, it is the easiest way for you to land a new job. In the meantime, can you get a job as a security guard? Those companies will hire ANYBODY and the job is skate, especially night shifts.
THEN you can focus on a side hustle. Side hustles take time to build. Unlikely you are going to magically make 30K a year from some side hustle unless you have some extraordinary skill or business idea, and even then, it's risky. I wouldn't blow through what little you have to try to get a sidle hustle going and then find out that you just wasted your money and have to go back to work. Get a new job, get some money stacked away, and THEN build your plans...