Intel GPU?
How is it expected to work with Intel integrated GPU?
iGPU passthrough is not supported. Technically speaking, it is a horrible idea to try and rip off an integrated graphics device, that works based on Shared Memory, and does not function like a normal dedicated PCIe graphics device. These are fundamentally two kinds of devices, not just by name, but by function. If you have a supported graphics device, but it is only the iGPU, then you can default back to running on baremetal. KVMs allow enthusiasts to containerize OSs they can already run on the host hardware, but with the notion that all the hardware you are talking about, is dedicated hardware that can be passed through to guest. PROXMOX may be of interest, but its not recommended as per just, average GPU in VM experiences go.