Games not working on MacOs 26

Hi, since I updated to MacOs 26, all the games I used to play are not working anymore. None from Apple Store and none from Steam. (Actually just a couple of games are working fine). Anyone else got the same issue? Any solution? I tried to uninstall and reinstall the games, restart the Mac, update the SO at the last version (26.0.1), start the games from the new Games app. Nothing is happening. The game start, the icon is bouncing on the dock, and that's it.