I work for a Swiss company and travel there occasionally. Switzerland has many of the same things that you like about Japan, bolstered by being very rich for a small country.
Another thing the two have in common? Homogeneity. Japan and Switzerland are both monocultures.
The US is too big and diverse to maintain a monoculture, especially now that the internet has split the information ecosphere into millions individual bubbles and white folks are no longer the majority in a lot of places and will not be the majority overall in a few years.
The optimists (mostly Democrats these days) will say this diversity is a source of strength. The pessimists (mostly Republicans and the core of MAGA) will tell you diversity is the root of all of our problems, which is why they think America needs to be great “again” as it was in their minds when a majority white culture dominated and is why they are so vehemently anti-immigration.
True democracy, where everyone’s vote is equal, rights are guaranteed equally, and religion is separate from government, is the only way this diverse country can move forward and strengthen our society. The former white majority is going to have to accept that we are equal, which is why Democracy is under such sustained attack from MAGA. They understand that a functioning democracy is the means to the end of whatever privilege they think they have.
That is why this election is such an inflection point.