Sims 4 Crash and freeze ( at start / when I click on screen )

Hello cookieeeslove​, let's figure out together what's going on!
First things first, try a Clean Boot.

If that didn't do the trick, also try doing a Clean Installation of your GPU drivers.
You should have an option when you choose the "Custom" installation, like the screenshot below.

Other graphics cards from AMD or Intel have similar settings.

Check that the correct GPU is selected.
On Windows, go to Settings -> Display -> Graphics -> Find The Sims 4 in the list (or add it if it is not there) and set your High-Performance GPU in the GPU preference field (usually an AMD or Nvidia graphics card).

Here's what it looks like.

If the issues persist, I suggest uninstalling every Mod or CC (if you have any of those), backing up the Sims 4 folder, and resetting the game. 

Lastly, if none of these worked, try uninstalling and reinstalling the game.

Keep us posted!