Vitual machine in C2


I want to create multiple virtual machines in baremetal c2, but each time that I try, it end with failure, I am relatively new to virtualization so I don’t know much where went wrong and how to debug.
The system is debian stretch and the hypervisor is xen-hypervisor.
there is someone who already tried on c1 but unsuccessful (I thought it might be because c1 is ARM processors, but c2 is x86-64). I really want to know more about virtualization and play around with it in a cloud like scaleway, so I turn to the community for help.

P.S (I want to create at least create 5 virtual machines for different specific services, if the cpu is not enough I will upgrade to other options later)