Let’s assume that you have written a set of 20 cards. You might struggle to remember the answer if you are learning them for the first time. It is natural to always have a hard time learning vocabulary, but this is not the point. I’m referring to more complex questions with multiple facts to remember.
If you are struggling to remember the answers, the explanation might simply be that your answers are illogical, falsely formulated, incomplete, or something else. We would recommend that you correct these issues right now. Create an answer which works for your learning style, formulate it better, or add/change some facts.
Go through the cards always in the same exact sequence, so that you can begin to remember the next question which is directly related to the previous question. This will help you connect the cards together and build a story for the entirety of the content.
If you notice an important fact missing in-between two cards, you can always fill in the gap later.
If you have milled through your cards using this method and have properly corrected them in a way that makes sense to you, there is a good chance that you are already on level 1 with all your cards. It should be straight-forward from here on. Continue to learn and watch your progress. You will soon experience that progress can be fun.