No one wants to hire me

I live in a small town ish, I worked in almost every fast food place where I am at, most of them won't hire me back, I even worked at a dollar general and I'm black listed, I'm getting to the point where I feel like stuck where I'm at, I haven't made any difference at all like I am wanting too, by now I should be going through a divorce and working and living on my own with my kids and yet I'm stuck, I even went as far as looking for a online job no one is hiring me, I only got far as trying to get my CDL thing but I took a class and I tried studying, but couldn't really study cause of the kids and of course taking the test cost money and I don't have that😮‍💨 I get overwhelmed if I try babysitting, shoot I get overwhelmed with own kids I don't know what to do at this point, my best freind and her fiance is living with me right now and she's working but they can't save up cause they have to put money in the house we are living in like food, diapers, wipes, (they have a child too) and even things that might need to be replaced (like toilet paper or gas, ect) i just want to up and leave, walk right out the door and just don't come back but i cant cause of my kids😮‍💨