Houdini for Unity without addons/packages?

Hi! I'm looking for resources - courses, tutorials, or posts - on creating terrains in Houdini from scratch, without relying on third-party packages or tools.

My main reason for avoiding third-party tools is their instability across Houdini version updates, which makes them unreliable for long-term projects.

I want to produce terrains that can be imported and used directly in Unity.

I tried project pegasus and simply some of the nodes were not functioning properly and I do not have enough knowledge yet to fix them.

Is it even good idea to create terrains in Houdini for game dev or should I ditch it?