Same for me, I can't start it from my library and trying to start it from the folder gives an error message.

Hello! Thank you for your feedback! Please try checking the game's integrity through the settings in Steam. It's possible that there might be a missing file on your computer, causing the game not to enter. If possible, feel free to join our Discord and provide a screenshot of the issue so that we can assist you more effectively.

I downloaded the game again today and it now installed all files, it works without problems.