I pre-ordered CS2, hoping it'd run but it was always freezing up just before going to the main menu. One time I was on the train and decided to see if I can get it to work, when it surprised me by loading up into the main menu without me changing a thing, but then again froze before I even could load a map. Tried it gain and again with no success until I had to get off the train.

Back home I immediately tried again but oddly it got stuck at the loading screen like before. Turned out that disconnecting/disabling the Wifi was the reason and I finally made it into the game but the map was completely black.
After a major update it started normally but was still not optimised well enough to actually enjoy playing it.

Now it won't even bring up the loading screen anymore but I can't be bothered to look into it again. Even when it was running it always took quite long to get to the main menu.

I'm not sure if this will help you at all but if you find a solution, I'd surely like to know, thanks.

Edit: Just realised you maybe talking about Counter Strike 2 and not City Skylines 2 as I assumed, lol.

sigma

dsfsdfrwedsfdfs

Counter Strike 2 on release dropped MAC support.
So if your playing on a MAC, you can't play as it is no longer a supported OS.