Hi... I was thinking about your problem. I feel really bad that you haven't won a tournament. I was wondering if you follow any of the strategy guides players have made (when it comes to selecting an animal to use for battle)? Here is one I use:
https://forums.storm8.com/showthread....amp-Discussion. Please know that it's an old chart, and doesn't have the newer elements, or the changes to animals that used to be single element animals & are now two elements (example, Barn Owl). If you read through the thread, other players have posted what is strong/weak to newer elements. Even when I was new, and didn't have super rare or ultra rare animals, I won all the tournaments that I tried to win. (There have been a few I've quit part way through)
I wish you and everyone else lots of luck! Once again, happy belated birthday.