If you open Nvidia X Server Settings, do you have options in it?
Why are you using sudo ?
If you do that and save the .nvidia-settings-rc has no longer your permissions and ownership. Because of that it will fail to load. There, now you know why is not working
Since you went the road on installing video-hybrid-amd-nvidia-450xx-prime when i don’t think has any positive effect installed on a Desktop PC where the dGPU is totally independent from the iGPU, then try them all 