This is intentional. Anki is spaced repetition software. It will only show you the cards when a certain time interval has passed, which is specific to each card based on the ratings you gave it before.
Perhaps this topic will be of interest to you:
What exactly do you mean by “doesn’t show much”? I guess you ran across one of the fake versions: AnkiApp is not part of the Anki ecosystem - Frequently Asked Questions
I’m curious, what has led you to try out Anki? It is certainly one of the, if not the most sophisticated spaced repetition tools out there, but its learning curve is significant, and you’re missing quite a few basic concepts still. If you really want to learn Anki, I highly recommend reading the official manual: Getting Started - Anki Manual