Subpages on Docs

It would be just GREAT if wordocs were more like CODA or NOTION, that enables you to create subpages inside a doc. It’s way better to organize and not having an infinite list of separeta docs about the same umbrella subject.
For example, ClickUp already has this feature.

This would be a game changer! I’m currently debating if I should switch to Monday from ClickUp, but the subpages feature is the biggest thing holding me back. It makes organizing documents so much easier and has really changed the way we use docs for client projects!