I am playing on laptop, with a damaged battery. It means, that if I disconnect it, or if there is a power shortage, the laptop turn off immediately.

I have experienced power cut today evening, for about a minute, and after I loaded my save(I am playing it since 2021), all the villagers(about 40-50), my named zombies, everybody were missing.

I was not in the village, as the shortage happened, but about 800 blocks away in a trial chamber. It means, it was not loaded while it was happened.