Repairing Broke My Game

@taeddiez  It's most likely some file within the folder; occasionally it's one of the subfolders itself, e.g. the saves folder is corrupt but the save inside are fine.  You can move your existing content to the new folder in batches, testing each time; any batch that causes an issue needs to be split and tested again until you find the problem.  Here's a list of everything inside your user folder:

https://sims4.crinrict.com/eng/2014/09/user-files-explained/

You'll notice that many of the files don't need to be put back and will regenerate as necessary, and in those cases you can just let the game use its new copies.