New beginner for installing cuda


I just reinstalled my laptop to ubuntu18.04. My Nvidia is GTX 965M. I changed my additional driver using 460-server. Then I rebooted my laptop. I cannot use nvidia-smi so that I can not go further to install cuda.

I searched a lot on the website, however most of them are suddenly failed to use cuda. My problem seems like I failed at the beginning. What should I do? Thanks for your time.