Personally, I think that if we can change Japan's national policy or change the marriage concept of Japanese young people, it may be greatly improved, so I think these two points are very important.

In fact, not only Japanese, but also China's fertility rate has been decreasing in recent two years. Not only do many people don't want to get married, but even if they do, it's hard to have children again. Mainly because of the pressure of life, many young people don't want to have children.

In fact, I feel that the state can introduce some relevant policies and how much subsidies can be given if children are born. If you have two children, you will get more subsidies and so on. If the state supports the policy of having children, I believe it may encourage more people to have children. After all, the state supports this phenomenon, and it is also very happy to get corresponding subsidies.

At the same time, some young people should also change their concept of marriage, because many people may feel that giving birth will be stressful and the economic burden will become greater. So some people simply don't get married, so I think it is very important to fundamentally change this concept of their young people.

If necessary, the state can also introduce a mandatory policy, and you must get married at a certain age. Not getting married will not be punished, but getting married will be rewarded by the state. If the state supports marriage and limits the age of marriage, I think it will be greatly improved.

Now many young people don't get married because of the pressure of life. If Japan can improve people's living standards, I think it can solve a large part of the problems.