I am learning German right now (B2) i tried Anki, quizlet and other stuff but the only thing that worked for me was story (text mining + enough Grammar to get me going + chatgpt)
There is actually a website i used a lot is called lingq which i used that beside chagpt as well.
Also do post this in /r/polyglot, i think people there would love this.
But your spreadsheet is really cool.