Single Moms ?!?

How do you afford to live? I'm a single mom of two babies 1&2 , I'm a waitress at a bowling alley and barely make any money , I'm a felon who can't get a decent job, I'm currently doing online school for medical assistant but feel it's a waste of time due to my felony's nobody wants to hire me (drug charge multi years ago) my childrens dad I left because he wouldn't stop using, know he has a GF and her son but refuses to see or take care of are children. How do you pay all the bills and take care of basic needs and children?? I can't afford daycare so I can't get a second job my grandpa watches during the day and I'm just at a loss and scared to go to court for child support I'm afraid he would get 50/50