Most of Western cities are in a “failed state”. The US is a prime example of that. Japan, while quite functional, is also quite expensive to have kids in. I think Japan will be the Western state that fared the best out of all the Western countries. The US is definitively the worst: Being quite expensive while also quite dysfunctional, and with a bonus: high crime rate.
How can you fix low birth rates once the process is in decline? Are there any successful examples of a country that has gotten rich, or is getting rich, that has done it succesfully? Every example I've read says no, regardless of geography or culture. It seems an impossible problem to fix.
In South Korea for example, I've read they've tried a veriety of incentives, and none work. The pressure to climb into or stay in the middle class, squeezes families or would-be mothers to work more, leading inevitably to lower birth rates as wages have stagnated over the past few decades (oversimplyifing but this applies everywhere).
Plenty of countries have monthly child benefit payments, just a few examples I know of [1], [2] [3] [4]. You can easily google "child benefits [country]" to find loads more examples. There are direct government payments and/or tax breaks in many countries. Countries with decent social welfare systems usually have some form of financial support during parental leave, for both mothers and fathers too.
These efforts don't really have much of an impact to raise birth rates.
[1] https://www.citizensinformation.ie/en/social_welfare/social_...
[2] https://www.iamexpat.de/expat-info/social-security/child-ben...
[3] https://www.citizensadvice.org.uk/benefits/child-benefit/bef...
[4] https://edition.cnn.com/2022/12/03/asia/south-korea-worlds-l...