You can play GrandMa Badass on your Steam Deck
The Grandma Badass game is compatible with your Steam Deck handheld!
However, this is a point and click game, set up essentially in the pure tradition of PC screen gaming with mouse and keyboard.
But you can still use your fingers to click and play without constraint.
Moreover, a direct save button allows you to save your game at any time and restart it whenever you want.
To set up your Steam Deck buttons to match the mouse buttons, however, you'll need to make a small adjustment on your console.
But nothing too complicated if you follow the guide provided by the REDD player at:
https://steamcommunity.com/sharedfiles/filedetails/?id=2890986713