Not sure how long parental leave we have, but here in France most [0] of your other points are available, yet birth rate has still been below replacement for 20 years [1]. So something else may be going on.
[0] While childcare is technically free, my understanding is that, in practice, places are limited, especially in big cities.
[1] https://fr.statista.com/statistiques/512101/nombre-enfants-p...