DirectX errors on MacOS?

Hi everyone!

I have a 2019 iMac running the latest version of Mojave using Parallels. I have Call of Duty Black Ops on Steam, and it is the OS X version (meaning it is not available on Windows at all!)

So basically, I installed the game successfully, but every time I try to play it, it says DirectX encountered an error and then the game doesn't start. As far as I knew, DirectX has never been available on Mac.... however this game is only available for MacOS...

Any tips or advice would be super appreciated! Thank you all :)