It used to be possible to install Windows 11 without a Microsoft account using the bypassnro command. But in the latest update Microsoft has removed this possibility.
However it is still possible to install Windows 11 without a Microsoft account and with just a local account.
When you reach the point, during the installation, where you have to select your country, press [Shift] + [F10] to open the command prompt.
Here enter the command start ms-cxh:localonly, and create your local account.
