Haven’t used your board before but this sounds like you’ve disabled the iGPU which tracks with your lspci output. You need to set your graphics choice to “onboard first” or possibly “onboard only” and maybe “multimonitor enabled”
What you want to see is both your NVIDIA and Intel GPU show up as VGA devices in the lspci output. As it is you won’t be able to isolate the 1660 for VM use because it’s your only card.
This is a separate Docker issue resolved by the command in this thread: