To download and install on PC, you should use official launchers rather than searching for standalone setup files from unverified third-party sites, which often contain malware. Official Download Methods
If you are looking to download the game, the "setup" file you actually need is the installer for a launcher: Battle.net:
to install the client, then download the game within that app.
As the download speed stabilized, Elias settled back. In a few hours, that tiny setup file would have transformed into a world of tactical raids and high-stakes moral choices. The preparation was over; the deployment had begun.
To download and install (2019) on PC, you do not typically download a standalone setup.exe for the game itself. Instead, you must download the official launcher from a verified platform like Battle.net or Steam , which then manages the installation of the game files. Official Download Platforms
To download and set up Call of Duty: Modern Warfare (2019) on your PC, you should use official launchers like Battle.net