The battery on my new Lenovo M11 tablet was draining fast and it didn't make any sense because the tablet and battery is brand new. It's supposed to last all day. Turns out it was the Facebook app running in the background nonstop spying on everything I'm doing on the tablet and using all the battery power. Deleted the app. Problem is fixed.
@AutisticInnovator Had that myself, though not on the current Lenovo. I've got FB Lite installed instead, which doesn't seem to be as much of a battery-hog.

@Knitronomicon @AutisticInnovator Microsoft Teams will do that on an Android. Delete it. If you must use it, install it, use it, then delete it.

Amazon Photos is another hog on Android. Delete it.

@chemoelectric @AutisticInnovator I’m not touching Teams with a ten-foot barge pole, thank you. I’m mostly a Mac-user, just two Android tablets (one of which is for the scrap heap if it crashes on me again).

@Knitronomicon @AutisticInnovator My autistic stepdaughter’s caretakers insist on using Teams. I think it is stupid, because the software is pathetic.

I had an Apple printer for years, and we had a Macbook Air, and I don’t know what else, and I have done a little development for Mac. Also I loathe both CUPS (though am stuck with it) and clang (which I avoid). My attitude towards Mac is I take Apple things, drop them, and kick them as far as I can. :))))

@Knitronomicon @AutisticInnovator But I do understand why others have better luck with Mac. They have different tastes.