Cross-platform mobile pattern for navigating among, editing, and creating cards

I'm a backend dev (mostly), very new to UX. I'm building a mobile-friendly Progressive Web App that allows users to view and edit cards with a few attributes (discussions: title, image, description, time, links, and instructions; demo if that helps).

I'd like to not reinvent the wheel, but reuse well-established patterns. Such apps have to be common, but none comes to my mind other than dating apps, which only handle viewing cards. I've been reading through Google's responsive design guidelines and basic mobile navigation patterns but haven't found this topic comprehensively addressed.

I'm looking in particular for:

  • navigation that's uniform on Android and iOS, especially the 'Back' functionality
  • showing previews vs. the full card
  • transitioning between viewing and editing a card
  • creating a new card

Is there a "model" app for this use case? Or some pattern guidelines for card management?

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