>>13035349I don't think learning to write kanji by hand is important unless you're living in Japan. It sounds like you're learning a lot of individual kanji via anki, but seeing it in context is more important so you can learn how to use it and of course pick up grammar. For the absolute basics of grammar I would recommend the Tae Kim guide or the Michel Thomas method. Otherwise I think it might be best for you to jump headfirst into doing your listening and reading reps. Watch Japanese VTuber clips with subtitles and read manga and books, or better yet visual novels. It's true that there's a cut-off point where you need people to talk with to really improve but I think you can get to a pretty high level even without, and the good thing about VTubers is that they aren't actual anime characters and tend to use real-life Japanese, so you can learn a lot. Mayuzumi speaks pretty clearly, so you could probably even just turn on YouTube automatic captions for his streams and pick up a lot from there.
Ganbare.