There is some question about whether it is a violation of the Civ VI game license to share game files, so we discourage that at CFC. Just validate your game files through Steam (go to your game library, right click the game, choose Properties, then the Local Files tab and then Verify Integrity of Game Files). It will detect which game files have been altered and download the originals. We recommend that you revalidate until it says there are no files requiring downloading.