Microsoft has significantly relaxed its licensing policies over the last few years. While Windows 11 is still technically tied to the motherboard of your old computer, you can legally transfer your license to a new device—provided you have the right type of license.
: Go to Settings > Accounts > Windows backup and ensure Remember my preferences is toggled on to sync your theme, passwords, and language settings. How to move your stuff from Windows 10 to Windows 11 transfer windows 11 to new computer updated
Ensure your old PC is ready for the migration by linking your license to your digital identity. How to USE Windows Licence on Another PC transfer windows 11 to new computer updated