CabbyTabby The Sims 4 folder in your screenshot contains the game's program files, not the user files, and it's fine where it is. The user files will regenerate when you can open the game again.
Do you get an error message when you try to play? If so, please post a screenshot.
Either way, please also provide a dxdiag. Click Windows key-R, enter dxdiag in the run box, wait for the scan to finish, click "Save all information," and save the file to your desktop. From there, you can attach it to a reply using the paper clip (Attachment) icon included with the other formatting buttons.