@Grey_Rainbowz
For the saves, I mean, when you start the game, are you able to load any of your saves? With your usual households and such?
Sometimes the game chooses to use another folder than the normal one, C:\Users\Username\Documents\Electronic Arts\The Sims 4, where you usually have all your files. If that happens, you cannot access any of you cc/mods, that you put in C:\Users\Username\Documents\Electronic Arts\The Sims 4\Mods, but then also, you cannot access your old saves. So I'm asking this to try and find out what problem you have.
Usually when the game does this, it creates a new EA/The sims 4 folder in :\Users\Username\OneDrive\Documents\, do you have have an electronics arts folder there? 🙂