Hello, Welcome to Microsoft Community.
Thanks for your feedback, To switch between keyboard languages on Windows 11, you can use the shortcut key "Windows key + Spacebar".
This will bring up the language bar, where you can select the language you want to use for your keyboard.
You can also add new languages by going to Settings > Time & Language > Language, and then selecting "Add a language".
From there, you can choose the language you want to add and set it as your default language. I hope this helps!
Lugoo Bei | Microsoft Community Support Specialist