Running Windows Server 2016 on a laptop like the Dell Latitude 5590 can indeed lead to driver compatibility issues, especially with components like touchpads.
Go to Dell's support website and download the touchpad driver for your Latitude 5590 model.
Even though it's for Windows 10, it might work with Server 2016.
If you have a driver installer, try running it in compatibility mode for Windows 10 or Windows 8.1.