to follow the existing examples, every child gets government money regardless of income. it's like UBI for minors.

and if you get a minimum wage job as an animation assistant doing inbetweening work, then the laws should make sure that the minimum wage is high enough that you can afford your living costs.

combined both measures will allow you to have children.

if you are self-employed and you are not earning enough money from your art you need to apply for unemployment benefits with all the conditions related to that.