How do you do it - be a single mother

I don’t understand how single parents do it. The ones without a partner at all, without friends, without parents or in-laws - just you and baby/kid. How does that happen? Where do you stay? How do you provide especially with a baby that needs your constant attention and love in order to develop beautifully. How do you earn but ensure baby is protected and safe? How do you shower by yourself if you can’t leave baby alone because they love you too much but also because it’s unsafe, when there’s no one you have but your baby....