VirtualBox is ridiculously simple to set up and get virtual machines going. Shared folders, shared clipboard and much more are no issue.
But.
It eats resources. The installed virtual machines (VM) run relatively slow. What have you found to be feature comparable - and most importantly more resource-efficient - alternatives for running VMs under Linux?
Might be that you really don’t need VMs but just lightweight namespace containers. If so, you can use docker/podman, systemd-nspawn or various other tools. The overhead will be less than 1% if you stay within the same architecture as your host.
https://wiki.archlinux.org/title/Systemd-nspawn