It seems that intertwined the two events, you use the compressed version? Use mods?
Because the system folders are hidden. Either change this parameter in the control panel, or do the following: Enter %appdata% in any folder in the address bar, and you will be taken to the Roaming folder. Click the AppData folder at the top of the address bar. Go to the Local folder, then find the User Data folder here. Here are your saves. You can make a shortcut to the User Data folder to get there even if it is hidden. For example, I put a shortcut in the game folder.
This way you always have quick access to your saves.