Desktop picture changes on it's own.

I am user of Monterey 12.6.3 and my desktop picture changes on it's own and there is this old solve:

”Try deleting the Desktop settings file. Open a Finder window, select Go

menu (on the menu bar) > Go to Folder, and type

~/Library/Preferences. Then, delete "com.apple.desktop.plist" and

"com.apple.systempreferences.plist", and restart. Finally, change your

background”

Problem is: I just don't find any "com.apple.desktop.plist" named file from my Preferences folder.