Re: Missing the resource.cfg File and Mods folder
Try a Sims 4 factory reset - Move the Sims 4 folder out of the Electronic Arts folder to the desktop. Load the game to create a new Sims 4 folder. This will create a new Mods folder and Resource.cfg file. - It will be as if you just reinstalled the game, so no game saves or cc.
This is okay, with your Sims 4 files safely backed up to the desktop, you can then move over what old files and folders you want. Like your Saves, Option.ini file, Tray folder and the files inside of the Mods folder.
If you need more info on resetting Sims 4, see the link below:
Resetting the game to factory settings without reinstalling
https://sims4.crinrict.com/en/2014/09/resetting-the-game-to-factory-settings-without-reinstalling/