I'm on year 10 of learning my second language and passed through a variety of teaching/learning methods. Intensive FSI courses, immersion including output as early as possible, self guided based heavily on reading and vocabulary, etc. While I get by mostly fine and now live in my second language, my listening is definitely my weakest skill.

Anki is probably my most beneficial single tool. Though if I were to do it over again I'd follow more or less the poster's strategy. Maybe 80% comprehensible input for listening and 20% Anki for vocab building. At least until I could watch native TV without much effort. I've played around a bit with LLMs, but still haven't found a really great use case for my study.

On the otherhand I think consistent practice (with growing difficulty) trumps technique. Whatever process keeps you motivated to practice month after month is most important.