Hi, I'm Ru and I'll be glad to help you today.
Please refer to the below guide on how to change your language in Windows 11.
https://www.groovypost.com/howto/change-languag...
https://www.windowscentral.com/how-change-syste...
If you come across an error please provide us with a screenshot so that we can troubleshoot further.
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There are links to non-Microsoft websites. The pages appear to be providing accurate, safe information. Watch out for ads on the sites that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the sites before you decide to download and install it.