The Sims™ Legacy Collection is NOT Launching

The Sims™ Legacy Collection on Steam was working (launching>running) fine about a month ago, but now the game is not launching, despite trying several solutions that I found online.

The game logo briefly appears in my taskbar and then disappears. The game doesn't run, and the Steam button just switches back to "Play."

OS Name: Microsoft Windows 11 Pro

Version: 10.0.26100 Build 26100

Please fix and propose any solutions. Thank you.