1. Follow the Windows 11 install process until you get to the "choose a country" screen.
2. Hit FN + Shift + F10. A command prompt appears.
3. Type cd oobe, then bypassnro.cmd to disable the Internet connection requirement. (The computer will reboot and return you to this screen.)
4. Hit FN + Shift + F10 again and this time Type ipconfig /release. Then hit Enter to disable the Internet.
5. Close the command prompt.
6. Continue with the installation, choosing the region. keyboard and second keyboard option. (A screen saying "Let's connect you to a network" appears, warning you that you need Internet.)
7. Click "I don't have Internet" to continue.
8. Click Continue with limited setup. (A new login screen appears asking "Who's going to use this device?")
9. Enter a username you want to use for your local account and click Next.
10. Enter a password you would like to use and click Next. You can also leave this field blank and have no password, but that's not recommended.
11. Complete the rest of the install process as you normally would.
Reference link below:
How to Install Windows 11 Without a Microsoft Account | Tom's Hardware (tomshardware.com)