You can play the Counter Strike 2 (CS2) game on a PC by downloading the game first via the Steam site.
Here's how to download CS2 on Steam:
Login to your Steam account via the application installed on your laptop/PC or from the Steam site.
If you don't have an account yet, you must create a Stema account first. Where you can follow the steps to create a Steam account provided on the Steam site or application.
In the Steam application or website, you can click the "Store" section, then in the search field on the right type "Counter Strike 2" and click the search results.
On the Counter Strike 2 game page, swipe down and click the menu button that says "Play Game", you can follow the steps to complete the download process.
After completing the download, you can play the Counter Strike 2 game.