everything has dissapeared from my desktop

Please refer to this excerpt from Add your Desktop and Documents files to iCloud Drive - Apple Support:

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.

I have just experienced something similar, but I cannot find the home folder anywhere. In my case, I had the icloud off for desktop and I turned it on. When I did that, my desktop got filled with the old desktop folders that where in the icloud and the folder I had presently in my desktop dissapeared and I cannot find it. Any help???

Thank yo John for your answer.

I can restore, or I can find my files in an external harddrive that I just copied before doing the iCloud thing, but my issue is, that I then expect that the files will be in two places filling memory and adding to confusion.

I do also think that it is very strange that the things just dissapears with just that click. I understand if they dissapeard when I erased them, but otherwise I don't.

I just found my folder and was able to move it back to my desktop, but I still do not know where it was. I found it by doing a name search. So I solved my present issue, but I wish I knew what happend to it, so I can find my things next time, even when I don't remember the exact name of a file/folder.

The usual method of restoring an item that can no longer be found is to restore it from a Time Machine backup: https://support.apple.com/guide/mac-help/back-up-files-mh35860/mac

Everything disappeared off my desktop... I called tech support, they said to restart computer, which I did, and everything came back.