You need to place your game installation in your Digital Download version of the game.
In Sims 3, your mods folder is in your Sims three folder, documents \Documents\Electronic Arts\The Sims 3 This is so that you can use those mods whenever you want, simply by taking them from your mods folder. If you have no mods folder, you will not be able to save them. When you download any kinds of mods or cc’s in your game, they all immediately go into the mods folder and then get stored there. Where do the mods and cc go after installation? You should now be able to have your mods folder download complete. As in windows, this function exists from default. The steps for sims 3 mods folder download are:
