Raising for childcare and to keep my home

Hi, my name is Polina and I’m fundraising to keep my kids home and get legal help to officially separate from their father. I’ve been a stay at home mum for 10 years while supporting my ex husband in his career, after which he has decided to leave me and take no responsibility for his childrens needs. He has also taken overdrafts and loans on my name and made me go into debt while insisting child care costs are too high and we can’t afford nursery costs for our children. I’m starting on minimum wage at 42 years old with 3 jobs and I’m the only carer for my 2 kids under 10. What I make doesn’t even come close to what I need for the payments. It’s a common story and I’m shocked to find out that the government does nothing to help in these situations. My ex can pretend to be homeless and take 0 responsibility for his kids and even claim the minimum wage salary I make. I’m appalled and appealing for help as I don’t see what else there is to do.