Help/tips single momma

Hello everyone I’m 20 & a mom of 2. The kids father and I haven’t been getting along I feel like it is taking a toll on my mental health and I’m just not happy. With that being said I’m used to being a stay at home mom and watching the kids. If we do split up I need a way of income to support my babies and myself as I won’t be able to pay for child care. Tia