On the other hand, Android keeps nagging me about enabling backups in Google Photos. I'm always one accidental click of the huge "Okay!" button in an unexpected popup away from having my data being uploaded to Google.
I've solved this long ago by disabling the app. Sadly, that means I can't view videos in the gallery, but I believe it's a fair compromise. I'd recommend taking a look at open source alternatives like Lavender Photos [1] or Fossify Gallery [2]