I found I remembered more creating the cards than reviewing them. Creating the cards made me think about the information and understand it so I could create the card (back and front) in a beneficial way. Reviewing them was a waste of time for me, but the act of creating something with the information I was trying to learn worked wonders.
To be honest I found this with mind maps, concept maps, and nearly every single other way of presenting information in a way that is touted as a good way to learn.
Since then I also started going through the ActivityPub protocol and Ankifying that, too. I'd scanned it a couple of times before and started building an implementation for fun, but I feel like Anki helped me grasp it better. I also don't have to refer back to the doc as much as I used to. Aside from the reviewing itself being useful, writing the actual cards has been very useful as well (but I kind of expected that, since writing/blogging has long been my preferred way of reinforcing new learnings).
I've Ankified different kinds of things so far, all in one deck. From details of auth flows to git commands (so I no longer have to Google each time I need to remember how to delete a remote tag or reset a git author).
Anki is great. However I am getting a little bit tired after the years. I now use it more as my knowledge base.
1. Don’t be too hard on yourself. Some months I review 10-20 new cards a day; this month, I was busier than usual, so I changed it to 1 new card a day. There’s no rush.
2. For languages, sentences are drastically more helpful to have as cards than single words. I find it much easier to learn a whole sentence than just a word.
3. I have a mix of my cards and pre-made ones (e.g., Vocab from my textbook).
4. It's OK to let a card be a leech and to forget about it. If a card was a leech, I’d just let it go. It's not school, the goal isn’t to get 100%, its just to use as another resource.
5. I use Anki along with 2-3 other apps AND a private teacher. I treat it like an additional resource, not the end all be all.