I suggest you make a Mac version of BeamNG.drive because sometimes installing Crossover and creating a steam bottle and THEN installing BeamNG.drive can become very problematic from time to time.
Hello, welcome to the forums. A Mac version has been suggested many times, and is unlikely to happen soon, because of the very small number of people using Mac, and the logistics of getting the game to run on Mac. Also, Apple computers a lot of the time don't have the power to run the game properly.