A page can rank nowhere even when the writing is solid, simply because Google never indexed it. The assumption underneath the problem feels reasonable: you hit publish, so the page must be live in search.

A stray 302 left where a 301 belonged is one of the most common reasons a migrated page never recovers its rankings. The site moves, the traffic dips, and weeks later the destination still has not absorbed the old page’s authority, because the server kept telling Google the move was temporary.