I hit, yet I was the 1 who took damage and died. Quite possibly 1 of the worst combats mechanics I've ever seen, its all based on RNG and even with that, the way it works is inconsistant
It might be due to the weather and seasonal buffing, I'm not sure if you took those into account. The indicator on the left shows what card types get extra power. I believe in later version, it displays on the card as well so it's easier to read and understand.
While I've gotten the hang of things for the most part, I will say that the game doesn't really explain card buffs very well, and unless I completely overlooked it the game doesn't even explain card buffs to you on its own, you have to manually look it up in the help info.