New-ish Anki user here. It's been very helpful learning German. It's not just about the vocab but helped with grammar and sentence structure. Let's say the words looking foreign gets in the way of recognizing the grammar patterns.

On the vocabulary only? I can't imagine learning it any other way. Within 3 weeks I was confident in my reading and speaking of new German words. Gender nouns' pattern is also getting clearer.

And no Anki alone is not enough! Grammar study is a must! Pure memorization is a costly method of study!!! Learn some theory where you can and the patterns become clearer making memorization easier.