Sometimes a something is a tattoo that you expect to be makeup or otherwise weirdly categorized.
Also check with the creator or read comments on the page where you got the mod from. Make sure they are still compatible with the game.
You can use tools such as the Mod conflict detector to detect them (be aware that this tool can only detect conflicts between mods/cc and not between the game and mods/cc).
Only some of my mods/cc show up Extracting Sims 4 Cc Zip Files For Mac Download Sims 4 Cc Downloads All Files Tools like 7zip or WinRar are needed for most archive files. You need to unpack them first and put the actual package/ts4script files into the mods folder. If it doesn’t, a different folder is used.
A good test for this is also that if you remove the mods folder completely, the game should automatically create a new one if you start the game.
It’s also very easy to accidentally move a folder on Windows in which case, you could be looking at a folder within a folder. Do make sure that the path of the folder you’ve added the mods to exactly matches.
Check out this post on how to find out which user folder the game is using: How to find your user folder. In this case, usually your save games are also missing.