Sims 4 keeps crashing when I click on 'New game'

@Veryemo7 For the second part, does it keep disabling itself? If so, you might have an issue with other software interfering.

For the first issue, the most likely explanation is that some of your new CC is broken. Remove it, delete localthumbcache, and add it back in smaller batches. More instructions are under 50-50 here: https://answers.ea.com/t5/Game-and-Mod-CC-Issues/Mod-and-CC-Issues-Discussion-and-Support-1-103-Dec-5-amp-14-2023/m-p/13271178#M51892