There is a widely reported bug in Windows when you change the user interface language in Windows 11, some Windows components remain in the original language, the best option is to perform an in-place repair with the Windows 11 ISO in the correct language version, please backup your files before doing that.
Please ensure you download the ISO in the correct language version, follow the steps, this is then not like re-installing Windows.
Click this link:
https://www.microsoft.com/software-download/windows11
to download the Windows 11 ISO
When the ISO file completes downloading
Disconnect from the Internet
Disconnect all external devices with the exception of a mouse or keyboard.
Temporarily disable any 3rd party Anti-virus you may have installed
Then, in Windows File Explorer, double click the ISO and then run Setup.exe and select the Install option.
Very Important - ensure you select the option to keep your files and apps.