If you need a suggestion, Anki is for retaining what you have already learned, not learning, which is what you are supposed to do yourself. In other words, learn to learn. For example,

I heavily rely on mnemonics and I have a field for them, thus for the German word "vertrauen", which stands for "to trust", I have the following mnemonic: ”I trust Ver to heal my wounds”. Ver is a friend doctor of mine.

For Japanese it helps me to have also mnemonics for kanji sounds(ka - cat, ho - hole), then make stories based on them.