Setting up an instance with OpenStack

Hey all,

I'm not sure if this is the best place to post, but I cannot find a dedicated OpenStack sub lemmy.

I'm trying to get experience with OpenStack, and it seems most tutorials are using something called "OpenMetal". This is subscription based with a free trial (which I may end up having to use), but without OpenMetal, it seems I only have access to one OS to install when creating an instance.

See here.

Is there a way for me to install something like Ubuntu 22.04 without the help from OpenMetal? If so, how would I go about doing it?