I’m an expert at nothing, but I’m going to guess and watch the thread: Power/Under voltage or SD corruption. I’m favoring the latter.

Reason being, the logs are pretty normal. I don’t see anything that would portend a crash. So it could be that when the RPi crashes requiring you to pull the plug, it hasn’t had a chance to write that to the logs. I know, back in my RPi days, I had a lot of issues with SD corruption.