DamjeI Thanks for the dxdiag, but it somehow doesn't show any errors. Do you use a cleaner app of some kind, one that deletes temporary files? If so, please remove it or at least disable it for now—the Windows error reports at least are important troubleshooting info.
Speaking of which, please please look for 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 errors that happened at exactly the time of your most recent two or three Sims 4 crashes. If you find one, double-click it to see more details, then copy that info and paste it into a reply here. The Reliability Monitor doesn't always update right away, so you might not see a very new error, but you can check back in an hour or so.