a little confused, what skill do you mean for gambling?
for me playing gambling to test my luck there is no skill needed, unless you like playing predictions, it depends on your hobby, as far as I play gambling I don't have any skills because it's just buying luck by trying bets
As for me I think that it is not necessary to have any knowlage at all to play casino games. You mast have any game feelings or luck just to choose your lucky game, but it is not knowledge. In Forex you must know and understand the market and it is different thing.
in the casino there are many games and from what I see of these many games that exist in the casino, the majority are games that depend on luck, but even though they are games that for the person to win, he needs luck, he also needs a strategy, the person needs knowledge about the game, not all games in which the person simply puts money and then just waits for luck to appear for him to win, there are many games that you need to have strategy and knowledge to be able to win, of course games like roulette, dice are not games that the person needs some strategy
for example card games, they are games in which the person needs to have a lot of knowledge and create good strategies to be able to win and make a profit, I've seen many people losing money constantly in card games, but I've also seen many people winning a lot of money with card games, but they are a person with a very high degree of card game skills, all sports betting games need to have knowledge in order to win
I would say that playing in the casino at the end of the day, one needs to have very high skills if you want to win, I could be wrong in my way of thinking, but of the people that I see showing off that they won money in the casino, they appear to be people with a high degree of knowledge about the game they are betting