I think there is a good idea in the gambling system you made. It's just that having several rounds with absolute no control isn't fun. For example, in poker you can increase your bet each round or fold it.
I absolutely think you should keep the basis, but you should expand. Just some example: the possibility to increase your bet; paying the amount of your bet to skip a turn; etc..
I sincerly think there is way to make it fun. Look a bit into it