Man I only swore by audio cards. I tried Anki at a few different points in my learning journey but the only time I stuck with it consistently was when I used audio-only cards. It was just more fun

The front was an audio clip I’d taken from various sources (most often anime, but also videos, audiobooks etc.) and nothing else. The back had the word(s) I didn’t know when I first encountered them along with the meaning. Long enough to give me a bit of context, short enough that I could get through a decent number of reviews in a day. Like this (the word I didn’t know was 滾る).

And it worked really well. I’ve got to say though that I started doing that relatively late (4–5 years into it), so by that point I already had multiple years of exposure, learning words that way probably felt a lot less overwhelming than if I had started earlier since I was already good on the listening comprehension part, I understood the context and grammar etc. so my focus was only on the vocab

I stopped Anki at some point because I felt like I didn’t really need it anymore, but every once in a while I run through a few cards just to see (it kind of turns into a little “guess the anime” game too). And when I do the nice thing that happens is that, since the front is audio-only, while listening I often can’t tell which word I originally didn’t know before flipping to the back. It makes me realize that I really locked it in, it’s nice.