all my files has gon e

It is quite possible that the files / folders that you may be looking for are somehow hidden.

To unhide those Files / Folders ➔ Open Finder ➔ Press Command + Shift + dot (Period Key to the left of Question Mark key).

That should reveal the hidden files/folder and check whether those are the ones that you were looking for.

Axel F.

See the following link to find instructions on how to create a 'All My Files' search using Finder Prefs

Couldn't find 'All My File' o… - Apple Community

You can change the Grouping display, by single click on the Group icon, and select None, to expand the list display.