Qemu

sudo apt install -y qemu-kvm virt-manager libvirt-daemon-system virtinst libvirt-clients bridge-utils
sudo systemctl enable --now libvirtd
sudo systemctl start libvirtd

sudo usermod -aG libvirt $USER
sudo usermod -aG kvm $USER
newgrp libvirt
newgrp kvm

Knowledge

sudo apt install cpu-checker
sudo apt install qemu-system
sudo apt install qemu-user-static

sudo systemctl stop libvirtd.socket
sudo systemctl stop libvirtd.service

sudo systemctl status virtlogd.socket
sudo systemctl status virtlogd.service

qemu-system-i386 -net user -cdrom my_iso.iso
kvm-ok

qemu before start 
sudo systemctl disable --now virtualbox.service

sudo systemctl enable  --now libvirt-guests.service 
sudo systemctl enable  --now virtlogd.service
sudo systemctl enable  --now libvirtd.service

sudo systemctl enable  --now virtlogd-admin.socket
sudo systemctl enable  --now virtlogd.socket

sudo systemctl enable  --now libvirtd-admin.socket
sudo systemctl enable  --now libvirtd-ro.socket
sudo systemctl enable  --now libvirtd.socket

References

Vagrant vs. Terraform Vagrant vs. CLI Tools Vagrant vs. Docker Linux Containers Install Qemu About Qemu Terraform Podman Vagrant Docker	Vagrant fails to create box with libvirt Install KVM on Ubuntu 22.04 VirtualBox Multipass Proxmox Juju