I am at my wits end!!

soccerstar0009​  Your dxdiag crashed at least twice while running, so it's missing some potentially useful information.  And the crashes could be indicative of a system issue, although this could also be a fluke.  So please run a couple of basic checks of your Windows system files:

• Click Windows key-X and select "Powershell (Administrator)" or "Windows Terminal (Administrator)" , whichever you see
• In the window that appears, copy and paste "DISM.exe /Online /Cleanup-image /Restorehealth" without quotes, and enter
• The system will take a little while to validate; if it throws an error, please list it
• Otherwise, copy and paste "sfc /scannow" without quotes into the window, and enter
• Post the message you receive

Restart your computer, open Windows Settings > Update & Security, click the box to check for updates, and if any install, restart again afterwards.

Try again to play, and if you can't, run and post a new dxdiag.  Additionally, please look for new errors in the Reliability Monitor.  Click 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 attempt to open Sims 3.  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.

If you still can't find an error, create a new admin Windows account and try playing there.  Make it local, as in, not linked to your Microsoft account or any email address.  You'll be able to at least try to launch the game without reinstalling anything.  If that doesn't work either, look for an error in the Reliability Monitor related to this attempt, and post its info if you find one.