itch.io

I'm not familiar with the game that inspired this one, so the system you're using is probably based on that one, but I think that the most reliable way to improve the combat would be to prevent no damage situations. You could just reduce everything to hit points and damage and focus on elements for advantage or disadvantage. Alternatively, turn armor into a shield that blocks a set amount of damage in a fight. I usually avoid dodge entirely when I design combat, but the best implementations I've seen are the ones where each attack attempts to land multiple hits. Critical hits are usually a fairer alternative to dodges because something still happens even if you don't crit.