I don't think you can. At least not out of the box. Pixels can do stupid adaptive charging where it tries to learn your routine and won't fully charge until X a

I don't think you can. At least not out of the box. Pixels can do stupid adaptive charging where it tries to learn your routine and won't fully charge until X amount of time before you supposedly wake up. But they do not have a setting where the phone just stops charging at 80% like Samsung or ay least my Pixel 7a does not.