Ubuntu 18.04 crash after installing Display driver and CUDA

Hi,
I have purchased a ASUS Zephyrus M16 laptop with Geforce RTX 3060 graphics card. I have dual operating system win10 and Ubuntu 18.04. During installation of CUDA 10.2 and display driver my Ubuntu crash every time. I have installed 3 times and tried CUDA 11, 10.4 and graphics card installation 515, 470.Following methods failed and cause crash and unable to show login page:

  1. Installing via “Additional Drivers” at the Software & Updates app
  2. Installing manually with apt get
  3. Installing with the .run package downloaded from nvidia webite.

Kindly suggest detail solution for my problem as I m newbie in linux.