Advice please I am a single mother divorced for 2 yrs now i have 4 kids and joint custody so?

I have worked full time for 6 yrs at the same job but i only make about 1300 a month and i am deeply in debt. I have joint custody of my 4 kids so no support is needed. I am beign garnished by 2 companies WOW reading this even sounds bad So many mistakes from when I was younger. I need more income but I pay childcare and rent and car note and things are so expensive. I want to go back to school but I am paying back student loans from the past and it will take me at least 5 yrs to get out of student loan debt and reg. debt. I can barely pay my bills I have no family to support me its just me and my 4 kids living on a low income and I want out, I want better for my kids and me. I want to get outof debt and go to school but I have f**ked up so bad in my life fianacially now my kids pay the price any advice at all i feell hopeless.