How can I retrieve documents folder from iCloud to desktop Mac?

Moved it how?

What did you do exactly?

If you turned on Desktop and Documents, then turn it off. If you did something else, then you will need to explain what you did exactly before anyone can offer any advice.

click here ➜ Add your Desktop and Documents files to iCloud Drive - Apple Support

Turn off Desktop and Documents

1. From your Mac, choose Apple menu  > System Settings. In macOS
2. Monterey or earlier, choose Apple menu  > System Preferences. 
3. Click Apple ID, then click iCloud.
4. Under Apps Using iCloud, click iCloud Drive. 
5. Turn off Desktop & Documents Folders.
6. Click Done.

What happens when you turn off Desktop and Documents

When you turn off Desktop & Documents Folders,

your files stay in iCloud Drive and a new Desktop and Documents

folder is created on your Mac in the home folder. You can move files

from iCloud Drive to your Mac as you need them, or select all of your

files and drag them to the place you want to keep them.

You had folder created over Mac desktop screen you dragged and dropped this folder to finder > iCloud section > documents it merged with iCloud as iCloud drive and desktops and documents box was checked .

To remove this folder from iCloud again drag and drop this folder to desktop screen see the article Work with folders and files in iCloud Drive - Apple Support