One cannot change the Windows shortcuts, but one can intercept keys
and change them on the fly.
AutoHotkey is a great program for remapping keyboard keys.
Here are the steps to set this up:
!^Right::^#Right
!^Left::^#Left
Save and run the script to test its functionality.
If it performs as expected, copy the script into the Startup folder
To trouvez le startup folder in Windows 10, open "Run" (press Win + R, or search for it in the menu Démarrer) and type either (without quotes): "shell:startup" for the current user, or "shell:commau démarrage" for all users. Copy startup.ahk to the folder that opens.