@YourMerigold Right, the folder in your screenshot contains the game's program files, not the user files. Leave that folder alone.
The Sims 4 user folder would be in one of these locations:
C:\Users\[your username]\Documents\Electronic Arts
C:\Users\[your username]\OneDrive\Documents\Electronic Arts
However, this folder only appears if you've started the game at least once. So don't be surprised if you don't see the folder in either location. Just have a look and let me know whether you do see that folder.
To make sure you're looking in the correct location, open a File Explorer window, click This PC in the left panel, double-click the C drive, then open Users > your username etc.