Your game is crashing continuously it might be two reasons either steam not working properly or your PC doesn't meet the specification. However, you can try https://gamexmentor.com/steam-not-opening/ Now you can do one thing try to reinstall the game but before take backup. For more information check the steam community where you might get an answer.
You can check server status of Steam sometime down for maintenance. If you uninstall the game from your PC them make sure delete temporary file as well as folder of the game. After try to install again. Are you getting any type of error?