The drivers are building OK but are not being loaded. Check the start of the curent boot log for a message akin to
NVRM: The NVIDIA GPU installed in this system is not supported by opennvidia.ko because it does not include the required GPU System Processor (GSP).
or words to that effect.
This indicates that your card is no longer supported by this version of the drivers and you must use the 580xx drivers as I indicated earlier. Assuming you do find this type of message, then the following assist in corecting this:
sudo dnf remove \*nvidia\* --exclude nvidia-gpu-firmware
followed by
sudo dnf install akmod-nvidia-580xx xorg-x11-drv-nvidia-580xx-cuda