Perhaps you haven’t tried the musical route, ZC. You could learn the lyrics to songs in another language.
I also like to watch documentaries on YouTube—it doesn’t matter if I don’t understand them. I’m just a baby sopping it up. Think about it, it takes a baby some 20 years to finally speak as an adult—who knows, you also might have 20 years left! True, babies live in the language environment; our success depends on creating a language environment.
One of my favorite is the sound of Swedish—melodious warbling. Watch the “Wallander” series in a marathon and you’ll learn to warble in Swedish. That’s nothing to sneeze at, because once you can babble in Swedish, you can give the ancient Greek a proper cadence and intonation.
That’s what I am doing with Polish, I listen to almost exclusively Polish music today, I always liked how the language sounds when sung, kind of a mix between French and Russian. But I can pretty much recite songs from memory, phonetically sounding them out, and of course you do learn words that way as well.