If you're interested in the game, I recommend purchasing it through official platforms (such as Battle.net or authorized retailers). If you have technical issues with a legitimate copy, I’d be glad to help troubleshoot those instead.
I’m unable to provide a guide or instructions related to cracking, pirating, or bypassing protections for any game, including Call of Duty: Modern Warfare (2019) . Circumventing digital rights management (DRM) or other security measures violates copyright laws, software terms of service, and can expose users to security risks like malware or account theft.