RTX A2000 Unable to install recommended Nvdia Driver. Need compatibility info

OS: Ubuntu 18.04.6
GPU: RTX A2000
nvidia-smi output:

Failed to initialize NVML: Driver/library version mismatch

lspci | grep VGA output:

** 00:02.0 VGA compatible controller: Intel Corporation Device 3e98 (rev 02)**
** 01:00.0 VGA compatible controller: NVIDIA Corporation Device 2571 (rev a1) **

ubuntu-drivers devices output:
** driver : nvidia-driver-470-server - distro non-free recommended**

I had installed 470 using local runtime installers and then I had issues with nvidia-smi where the GPU was not detected but listing as ERR!

Then I uninstalled the driver by purge and autoremove

And rein stalled but now nvidia-smi itself doesn’t work

Please provide the compatible driver, kernel, versions for RTX A2000 to install CUDA 10 toolkit