@jazzmiint I've moved your post to the Sims 3 PC tech section.
The first thing to do is to verify that you're adding the Mods folder (and everything else) to the correct Sims 3 game folder. It's possible that you have more than one on your computer, and that the game isn't reading the one you're using. It's simple enough to verify though: check the last modified date on the deviceconfig.log file.
If its time stamp doesn't match the last time you launched TS3, then you have a second game folder. In Windows, search for "deviceconfig" in a File Explorer window and take a look at the file path for any of these files you see. On a Mac, searching might not turn up anything, but the first place to check is iCloud.
If you are in fact using the correct folder, it's a good idea to start from scratch with a clean folder, get your mods working, and then add the rest of your content to the new folder later. Pull your existing Sims 3 game folder out of Documents\Electronic Arts and onto your desktop, then open the launcher to spawn a clean folder. Download a fresh copy of the Mods framework, unzip it, place it in the new folder, and delete scriptCache.package.
If this works, you can start adding more mods in batches and testing. Loading the game should be faster as well, since the new game folder won't have much content in it, but with script mods at least, you'll only need to go as far as the Main Menu. Any script mod that's detected will be listed in a popup, and if you don't see the one(s) you've added, you'll know that something went wrong.
If any of these steps don't work, let me know, and we'll go from there. The Framework itself is reliable, and there shouldn't be anything wrong with the downloads, but if you really can't get it to work, you can recreate one yourself and test with other mods instead. You can also find resource.cfg elsewhere; I'll PM you a link if you need it. (Direct download links aren't allowed in threads, although naming a mod is fine as long as it doesn't have any adult content.)