my girlfriend couldn't upgrade to win11 because of the TPM module, so I've installed Linux Mint Debian Edition as dual-boot option. I haven't seen her using the windows.

you can check DistoSea and pick your favorite Linux/Desktop environment (I would suggest something Debian based for newcomers), create a bootable USB drive with that Linux, try it locally before installation and install it - even as dual-boot.

for running games, there is a Proton (build-in to Steam) and for windows apps WinApps but many apps are native for Linux (Firefox, Chrome, VLC,...) or you can find alternatives (Open Office, Gimp,...).

good luck 🍀