Lock Screen Keyboard Shortcut //free\\

While Windows does not easily allow you to remap Win + L (it is hard-coded for security), you can create new shortcuts for "Lock Workstation" using third-party tools like AutoHotKey or by creating a desktop shortcut and assigning a key combination to it.

If the Windows key is broken or disabled via group policy (common in some corporate environments), you can use a two-step keyboard sequence: lock screen keyboard shortcut