My cards are disappearing

Recently I went onto my Anki and it looked like some of my cards had disappeared because the “due” and “new” columns showed grey zeros in some of my decks. When I click on browse and look through my cards they are all there. I thought that maybe I had completed those cards and that they would show up in a few days. But they have not reappeared to complete in months and I am getting worried because I cannot test myself unless I go on browse and look through them that way. Please help!

Does this help to understand the situation?

What does it say the info history of these cards?


Yes! Thank you so much