Sims 4 mods not showing up

@lunarrsims  Please check the file path to your user folder as the game sees it.  Here's how to find it:

https://sims4.crinrict.com/eng/2018/07/how-to-find-your-user-folder/

If that file path is different than the path to your Mods folder, that's the problem.  If you need help creating or adjusting the symbolic link, please list the file path the game is using and the drive letter of the external drive.  Let me know whether you actually moved the Documents directory itself to the external as well, or if you simply created a symlink.

The file path is C:Users>Public>Public Documents>Electronic Arts>Sims 4.

C: is my regular Windows files, D: is my external hard drive. I thought I switched it over, but I guess not. How do I switch it to my Hard Drive?

Forgot to mention, I also moved the documents folder itself to the external, creating the symlink wasn't working.

@lunarrsims  The Documents directory should never be on an external drive.  If it's ever unplugged, or even if it's connected but receives a different drive letter, Windows could react badly if and when some process calls for accessing Documents.  And I believe your current issue is a (relatively mild) example: Sims 4 isn't able to access Documents on the external, for whatever reason, and so is defaulting to using the Public Documents folder.

Step one here is to revert the location of Documents to your internal drive.  Change it back to this:

C:\Users\[your username]\Documents

with your actual username substituted in.  You can use the same method you did to move Documents to the external.  If that doesn't work, try this one instead:

https://support.microsoft.com/en-us/topic/operation-to-change-a-personal-folder-location-fails-in-windows-ffb95139-6dbb-821d-27ec-62c9aaccd720

Next, please try to create the symbolic link again, using Crinrict's tutorial, and if it doesn't work, please post a screenshot of the Command Prompt window showing the command you used and the result.