Lingotrack

You're raising a good point about tracking not just media progress, but vocab too. However, Lingotrack is only a database for finding content, as opposed to allowing you to actually read / watch / listen to it on the platform too (since that would bring in a slew of copyright issues). That said, there is a different tool I've been using — not my own — which seems like it might address your pain points: Mochi Cards. It's a flashcard app, so requires a bit of manual input (you add in the new word), but then an AI can generate audio, a definition, an explanation, etc. for you. I've been using it for Spanish for the past few months and it's been stellar.