I can think of 2 ways to do this,
Version 1 is to have different Sims 4 folders inside the documents/EA folder that you rename depending on which game you want to use.
Example: inside your documents/Electronic Arts folder you have the folders - 'The Sims 4 Tournament', 'The Sims 4 Dynasty', 'The Sims 4 Free'. Each of these folders has a complete copy of the user game files but the mods folder has different content and the saves folder has only the relevant saves. Rename 'The Sims 4 Tournament' folder to 'The Sims 4' and play the current tournament game without mods. Later change this 'The Sims 4' folder back to 'The Sims 4 Tournament', rename one of the other folders to 'The Sims 4' and continue with your game with the amount of mods/cc that you have set up.
Pros: The mods and cc are always correct for the games you are playing
Cons: You have to keep renaming you folders and if you get it wrong you could potentially lose a whole set of games. If you get new mods/cc you may have to put it into several places.
Version 2: Find a 'Mod Manager' programme (there is one on Mod The Sims, there are probably others). Use it to switch mods and cc on and off before starting Sims.
Pros: Easier to turn individual mods on and off, less chance of accidentally losing a save game.
Cons: Extra software to install and set up plus lots of turning on/off mods and cc when getting ready for a different type of game.
I personally use a mod manager, I'm pretty sure others use multiple folders. It comes down to what suits you and your way of playing.
Hope this helps
Happy Simming
Helen