GNOME Boxes
The simplest way to run other operating systems in a window.
Installs from Flathub.
Install just GNOME BoxesHyper-V comes with Windows, so it won't be on a new Linux PC. These free apps do the same job, and TuxPick installs them in one go.
Install both with TuxPickIt works on Ubuntu 22.04 and 24.04, and on systems built on them like Zorin OS and Pop!_OS.