Regarding the GUI and modifying this Guide to a GUI-Based one:
I’m not sure that all Windows 11 Home editions have the GUI for Bitlocker or even normal device encryption ((I’m on the latest Windows 11 2H22). My device fulfills all requirements mentioned in the guide, I encrypted my C Drive using it but I still can’t see the option from the GUI.
Here are the requierments:
Here are the non-existent GUI options:
Here’s the proof that Bitlocker is activated (using your guide) on C Drive but not D Drive on my machine:
(System → Storage → Advanced Storage Settings → Disk & Volumes)
P.S.: Clicking on (Turn on Bitlocker) under the section of D Drive only opens this, where I can backup my encryption key for the C Drive: