Re: I can't find mods folder on sims 4

@Teenybober  Do you know where your user data folder is?  This Sims 4 folder, not the one with the game files but a separate folder in a different directory, stores saves, saved households and builds, screenshots, etc. as well as mods.  The game itself should create a Mods folder by default there.  In Windows and macOS, the user data is in Documents\Electronic Arts\The Sims 4, although I have no idea if your setup would look different.

If you're not sure where to find this content, load your game to the Main Menu, click Load Game, then hover over the folder icon under the name of your save.  It will list the full file path to that save.  So just find that same Sims 4 folder, and you should see a Mods folder inside.