NotebookLM meets OneNote ...

Microsoft OneNote supports a range of content types, including text, images, audio recordings, and videos, as well as the ability to integrate with other Microsoft Office applications. Users can ...

If this helps, it's designed for unstructured information storage, so fundamentally you use it as you'd use a notebook with the exception that organisation is something you can do ad-hoc. For example ...

Microsoft OneNote is a versatile and robust tool designed to simplify note-taking and organization. Whether you are a student, professional, or casual user, understanding how to use its features ...