Many countries do in some form or another. But the subsidies are trivial compared to the huge expenses of raising a child well.
You are right that many countries do - but they are simply not high enough to make it worthwhile and make the same economical sense at not having kids does.
As “well raised” is not possible to measure, this is not a feasible solution.
One work around has been to bet that those with earned incomes are likelier to raise their kids well, so the subsidies can be non refundable earned income tax credits.
But I doubt sufficient people have sufficient tax liabilities that offset the costs of the minimum quality of life many people require for their kids and them to have.
One way to subsidize parents is to give free child care. As a bonus, the government get to decide exactly how these kids are being raised.
But yeah, it is a material investment for the society to take - which is likely why we have seen the cost of kids being transferred to the parents (and lower birth rates).
Can you elaborate on what you mean here? Having well-raised kids is fascist? Which part did you mean?