aschureman Thanks for the dxdiag. If you were trying to attach a lastcrash file, this site blocks it due to some of the text inside. But that's fine, regular users can't do much with the file anyway.
The Sims 4 crashes in your dxdiag are mostly due to a component of the Nvidia graphics driver. So please do a clean uninstall and reinstall of the driver, as described here:
https://crinrict.com/blog/2019/02/clean-re-install-of-graphics-drivers-with-display-driver-uninstaller-ddu.html
Use the newest Nvidia driver Dell provides for your laptop:
https://www.dell.com/support/product-details/en-us/product/alienware-m18-r2-laptop/drivers
If you get another crash, please look for new errors in the Reliability Monitor. Hit Windows key-R and enter "perfmon /rel" without quotes, and you'll see a chart of errors and updates with a column for each day. Today is on the right.
Look for an error that happened at exactly the time of your most recent Sims 4 crash. If you find one, double-click it to see more details, then copy that info and paste it into a reply here. If you don't see a new error, check back in an hour or so—the Reliability Monitor doesn't always update right away.