Mya sims 4

@Blooduwedd  Please uninstall Razer's Game Manager Service, which is crashing.  You may be able to resolve the issue simply by reinstalling it, but please leave it uninstalled until Sims 4 is working again.  If that alone doesn't help, uninstall any other Razer apps you have: Synapse, Cortex, whatever you can find.

If that doesn't help either, please uninstall Sims 4 and reinstall it on your D drive, which has more than enough space for it.  The issue could be the format of your external drive, which is exFAT rather than NTFS.  To change the format, you'd need to wipe the drive, so you'd be uninstalling anyway, but rather than erase the drive first, it would be best to confirm that the game installs and runs correctly on your secondary internal drive.  You can install only the base game if you'd like to save time.

To be clear, I don't know for sure that an exFAT drive won't run Sims 4 properly.  But it's a reasonable possibility and should be tested.