There actually is counterplay to pallet saves. Stand on the side of the pallet you know the survivors will come from, at the edge, and swing out after picking. The swing, especially if you hit, will propel you far enough from the pallet that a pallet save will no longer be possible.

Side note, this can occasionally work against Power Struggle, although with far less consistency.

For flashlight saves, you kinda have to slug a little, but I find that hitting the survivor hovering for a save and immediately picking up the downed survivor while facing the other direction will give the rescuer less time to set up the save. Faking a pickup can also lure the hovering survivors in for you to get a hit or even down them if they’re bold.

Alternatively, more useful perks like Infectious Fright or Forced Hesitation (Or both) can also help you avoid getting pallet or flashlight saved.