Thank you for checking out the game! :-)
Yes, the game is complex and I had to leave the exploration part out because I couldn't work on the game every day. In the exploration part, you would have a chance to collect and increase your card, thing that would balance the odds to have a fair fight in the second match. That's why you couldn't win in the second match.
If you are interested in the project, check out the game page, there are the full instructions with the reason why some things are weird or not working and what I plan to do next. In case you like the game, feel free to follow the project. I plan to involve the community for the development of new cards for the game.