How to Run Virt-Manager on macOS (or Windows)
Virt-Manager doesn't run natively on macOS. The easy workaround: run it on a Linux server and display it on your Mac or Windows PC with X11 forwarding.
macOS
macOS Terminal tutorials: installing and switching Java JDKs, Homebrew, the root user, bootable USB drives and Virt-Manager.
Enable the Root User on macOS
Check whether the root user is enabled on macOS, then enable or disable it from the Terminal with dsenableroot. Plus why you should be careful doing it.
How to Uninstall Java from macOS
Completely uninstall Java from macOS: check your installed version, find the JDK in /Library/Java/JavaVirtualMachines and remove it from the Terminal.
How to Create a Bootable USB from an ISO on Mac Using Terminal
Create a bootable USB drive from an ISO on macOS using only Terminal: find the disk with diskutil, unmount it and write the image with dd. No extra apps.
Install and Set the Default Java JDK Version on macOS
Install the latest Java JDK on macOS, switch the default Java version with JAVA_HOME and uninstall JDKs you no longer need, all from the Terminal.
How to Install Homebrew on macOS
Install Homebrew on macOS with one Terminal command, learn where it installs on Apple Silicon vs Intel Macs and verify it works with brew --version.