For what you said, it looks like you installed the game in the wrong place. The folder path you show is for the user folder created by the game the 1st time you run it, not for the game files. They need to be in separate locations on your computer.
The game files should be installed in C:\Program Files\EA Games\The Sims 4. When you start the game through the EA App, the game will create the user folder in C:\Documents\Electronic Arts\The Sims 4.
Once that is created, you can copy over your mods and CC to the Mods folder and your saves to the Saves folder within the user folder.
So, it looks like you need to uninstall the game and reinstall it into the correct location.
Hope this helps.
