If you are looking for a relatively straightforward way of running HomeAssistantOS, and you have a Proxmox, LXC or Incus instance, then it might be worth checking out their OVA. It's not difficult to download the OVA and import into LXC/Incus as a VM. Fully supported by HA and by default you get root access to the VM via the instance console.
#homeassistant #selfhosting #incus