Looks like the only surprising step appeared to be was manual linux bridge configuration via nmcli vs utilizing Cockpit Web Console on almost all Linux free flavors like Fedora,Debian,Manjaro and etc. Original disk layout for openSUSE (L1 Guest) been configured . . .

Source: LXer – Attempt to deploy KVM Hypervisor to openSUSE 15.5 instance (VENV test)