Hello! I'm sorry to hear that you're having trouble with Warzone 2.0. The DirectX error can be caused by a number of issues, but there are a few steps you can take to try and resolve it.
First, make sure that your graphics drivers are up to date. You can download the latest drivers from the website of your graphics card manufacturer.
Second, try running the game in compatibility mode. Right-click on the game's shortcut or .exe file, select Properties, and then click on the Compatibility tab. Check the box that says "Run this program in compatibility mode for" and select an earlier version of Windows that the game was designed for.
Third, try running the game as an administrator. Right-click on the game's shortcut or .exe file, select Properties, and then click on the Compatibility tab. Check the box that says "Run this program as an administrator" and click Apply.
If none of these steps work, you may need to try reinstalling the game again. Make sure that you completely uninstall the game and then reinstall it from scratch.
I hope these suggestions help you resolve the DirectX error in Warzone 2.0!