Update deleted all my saves and mods

@MaddyMcMoody  Does your computer run Windows or macOS, and what version?  (If you're on a Mac, I can move your post to the Mac section, since troubleshooting is a bit different.)

It's possible your user data folder, with all your saves and mods, was moved elsewhere, either by you or by the system.  In Windows, open a File Explorer window and search for "config" (without quotes).  You should see a file called config.log with a last modified date from the last time you opened the game.  That file will be in the folder that's missing all your saves and mods.  Hopefully there's another config.log as well though—it would be in the same folder as your old content.  If you find this folder, you can transfer the saves and mods inside into the currently empty game folder.

If you're not sure what to do with all this, please let me know how many config files you have, and the file path for each one.

@MaddyMcMoody  The usual place for the user data folder to go is cloud storage, i.e. OneDrive in Windows.  So you could look there for a copy of the folder.  I guess a third-party cloud storage service (google drive or the like) could also move the contents of your Documents folder under the wrong settings.  But you'd at least know that you have that service.

I agree, it's very strange that your folder would just disappear.  Usually, the only ways this could happen are if you had a virus oro a damaged hard drive.  But since this coincided with a Sims 4 update, it does seem like the game did it, and not your system.

I'm sorry this happened to you, and I wish there were a way to fix it.

Edit:  Never mind, I just saw your new post.  That's great news; even if there's no explanation for it, I'm glad you found your data after all.