[2022] Game Keeps Crashing on Start Up

DXDIAG is a program you run from the Windows search box on the task bar. After running it will open a window and start collecting info with a progress bar in the lower-left corner. When it completes click the 'save all information' button and save it to a file then attach that file here.

Please attach here your Documents/Paradox Interactive/CK3/pdx_settings.txt .
From your Documents/Paradox Interactive/CK3/logs/ folder, attach here system.log , error.log, exceptions.log  

No mention of the game in that dxdiag.

What happens if you run ck3.exe directly? Any error show?

In the game launcher-game settings, choose fullScreen, Vsync Off, and refresh rate 60 . Any difference?

If not, then edit that pdx_settings.txt file and find the renderer line. Change DX11 to OpenGL (exactly like that) - any difference?  

You may find it slower, reducing graphics quality and resolution may help with that.

But that shows that you have a problem in the video area, DirectX 11 in Windows, something else in Windows' graphics stuff, the video driver, or video card.