Oh wait, you no longer need root if you are running Android 14 (or higher)! Unfortunately, if you are stuck on Android 12, 12L, or 13, root with Magisk is still required. On Android 14, there is a new toggle in the developer options known as "Disable child process restrictions". Switch that toggle on, and it will become possible to use virtual machines again.
To get the developer options, click the build number seven times in About Phone/Tablet.