[visarga]

> I'm more interested in the problem of "I'd like to read something in [German]"

Something can be done here. Books with aligned/inlined/popup translations, tracking known/unknown vocabulary, spaced repetition for new words.

[ichverstehe]

It does not seem to be developed anymore, but Readlang[1] does exactly that. It has been very helpful early on as I was learning Spanish and German.

[1] https://readlang.com/