I use only the rpmfusion versions, and this HowTo is very helpful.
https://rpmfusion.org/Howto/NVIDIA
BTW, the list of proper drivers for specific cards explains the confusion. For example, the 390 version will not work on the latest cards, the 440 driver will not work on the older cards, etc. You need to know which card you have installed in order to select the proper driver – it is all in the Howto.