Virtual Machines can be very handy, here's how to install QEMU on a Debian based Linux distro so you can start creating and using them
QEMU Wiki: https://wiki.qemu.org/Documentation
Commands mentioned in the video:
From the command line
sudo apt update
sudo apt install -y qemu-kvm libvirt-daemon-system libvirt-clients bridge-utils virt-manager
Then add your user to the required groups, this avoids having to provide credentials each time you start it. The “$USER” environment variable refers to the currently logged in user.
sudo usermod -aG libvirt $USER
sudo usermod -aG kvm $USER
Log out and back in for the group changes to take effect, then start the service:
sudo systemctl enable --now libvirtd