In that case aren’t most games gambling? You fight a boss and you die. You have failed and you lose progress of the boss fight which means the failed fight was a waste of time. Gambling.
My actual point is that despite us having a relatively good intuition on what is gambling, defining what gambling really is is pretty hard. Be too broad and you will end up marking non-gambling things as gambling, be too narrow and you get things like lootboxes that definitely feel like gambling but don’t actually fit most legal definitions of gambling.
Your definition is so broad it encompasses almost all games and as such is useless when you want to use it to regulate gambling on games.
So all subscription games are gambling? What about Fallout 76? It’s not gambling if you just buy the game but if you buy the subscription the game becomes gambling despite the game fundamentally stays the same and the subscription doesn’t add any RNG to the game?