"Plus young people are dating less and less here" - I keep seeing this a lot. Why are people dating less and less?
People are more interested in spending the money and time they have on hanging out with their friends or their hobbies than dating.
Basically all of Japan’s “problems” boil down to society cutting inputs then acting shocked that the output has dropped, then choosing to blame the younger generations instead of helping them. Cf. avocado toast in the west
And when it comes to money, it's primarily based on age and nothing else. A 59 year old thumb twiddler counting down the days until he can retire and chug some beers from morning to night will easily be getting paid more than double a 28 year old engineer whose work is the backbone of the company.
After they get married, typically women lose their job and end up as a bitter homemaker waiting around for their drunk husband to arrive on the last train.