Sims 4 Save File Corrupted

@confinedexpert You're probably missing the rest of the save data.
In the "saves" folder, you should have 2 more folders, "scratch" and "SerialGUID" within that "saves" folder, both containing files related to the save slots. Also, you should have all the contents of the "Tray" and "lotcacheddata" folders too, since they contain data defining your Sims and the lots and households they occupy.

If you have all those files in their proper folders, and your saves are still corrupt, I would assume there is an issue with the recovered files having been overwritten or munged at some point after resetting your system. Just because filenames are available using forensic tools doesn't necessarily mean the files are intact. (I've recently gone through a similar thing, it really bites, I know!)