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The instructions on this page worked for me (Ubuntu 18.04, GTX 1650s): https://github.com/lutris/docs/blob/master/InstallingDrivers.md
Nvidia:
To get the latest Nvidia drivers it is necessary to add the Proprietary GPU Drivers PPA:
sudo add-apt-repository ppa:graphics-drivers/ppa
Enable 32 bit architecture (if you haven't already):
sudo dpkg --add-architecture i386
Update to refresh packages:
sudo apt update
Warning: Please ensure your graphics card is supported by the 430 driver before installing. For a list of supported GPUs click here: https://www.nvidia.com/Download/driverResults.aspx/149138/en-us
Install the 440.82 driver:
sudo apt install nvidia-driver-440 libnvidia-gl-440 libnvidia-gl-440:i386
Install support for Vulkan API (will be functional only if you have a Vulkan capable GPU):
sudo apt install libvulkan1 libvulkan1:i386
Reboot to apply changes.