check cpu virtualization support

verify if you have svm or vmx support:

grep -E 'svm|vmx' /proc/cpuinfo

verify that the kvm kernel modules are loaded:

lsmod | grep kvm

load kernel module for intel:

modprobe kvm-intel

load kernel module for amd:

modprobe kvm-amd

install virtualization packages

using dnf install Virtualization Host group:

dnf groupinstall "Virtualization Host" -y

install virt-manager:

dnf install virt-manager