Hello and welcome to Feedback Quest 6! My name's Hythrain, and I'm one of the hosts and streamers for this event! I'm writing this feedback live after having played your game!
So this is the second luck-based game I came across. I will admit, I strongly dislike luck based games like this as I traditionally have bad luck and games like this tend to not go well for me. I never felt like rolls were ever in my favor, as either the computer would do amazing as if it knew what was coming or when it did do poorly I'd do just as bad, if not worse, and not be able to do anything anyway. Between that and a lack of healing between rounds, it felt like I had no agency. Meanwhile, using items doesn't make sense to me. I assume the idea is your cards are supposed to match the requirements of the item, but the one time I had the requirements and tried to use an item it didn't seem to do anything.
Luck-based games like this can feel punishing for people who don't have good luck. I would highly recommend some new functionality to give the player some control over their side of rolls beyond the rerolls.