we know that most of the times we lost on gambling, but instead of stopping we keep on playing for the next day
after we lost, we got frustrated but we still back to play, is this called "gamble addiction"?
In my opinion this could be an addiction if you are unable to control your impulse to gamble and you are completely out of control with your betting.
I, like most gamblers, am on the red, but I know exactly how much money I am going to bet, I know what games I like and I only play those, mostly I play for fun, and like any other hobby I incur in some expenses, you could say that I am addicted to gambling?, I dont think so, however I fit the definition that you put in the OP, someone that keeps losing and does not quit.