My laptop did not go to sleep
Some people have similar experiences regarding sleep issue, including system just went blank on wake up.
From my experiences on Linux Mint in two different laptops, the sleep issue related to Linux system cache. By default, many Linuxes use these settings, vm.dirty_ratio and vm.dirty_background_ratio are about 5 to 20 percent of the available system memory. This is fine if your system has less than 4GB of memory installed, but if your system has 8GB or more of memory, this can cause problems later on.
So I have this "can't wake up" issue on my two differents laptop, the first laptop has 8 GB of memory and the second laptop has 16 GB. And both laptops are running on Linux Mint.
In search of a solution, I came across this conversation https://lkml.org/lkml/2013/10/25/39
I also found some possible system cache related issues on various distros.
So I tried what Linus suggested, and I use lower values than suggested. And it worked!, the "can't wake up" issue on both laptops just gone in instant!
I could tell from my POV, there is a need for foreign labor in Japan. It was even announced at the Japanese embassy (in my country) most of the labor needed to care for the elderly.
another example just a few months ago https://english.kyodonews.net/news/2025/02/59f0c75e44f4-indonesian-bus-driver-to-be-1st-to-work-under-new-japan-visa-status.html
You can also take a look at r/japanlife, most of them are foreigners from western countries.