If you are experienced or not doesn't matter. In gambling you have to depend on luck. If you are lucky then you can win a big jackpot. If you are experienced all you can do is to be a bit more cautious. So I believe everyone can do gambling but it would be better if they take it as a fun. It is true that you can win occasional jackpot but it is not to be taken as a source of income.
Inasmuch as luck and chance plays a very vital role in gambling, it doesn't mean that's all you need to be a gambler, yeah it's true that at some point in the beginning of every gambler's gambling life, they depended mostly on luck but gradually gained knowledge and experience as they advance. But it wouldn't be completely true to say that luck is all a gambler needs to succeed in gambling.
Besides there are games that need less luck and more knowledge and experience, such as card games like poker or blackjack, your success depends on how knowledgeable you are in that game and what level of skill and experience you've managed to gather in the long run.
You are absolutely right when you talk about how to do it because you have experience in those games, I am more into playing black jack, but not counting cards, because I think that in back jack games you have to play with the full maso of the 54 cards and not two or three more, because it cannot be counted there, then poker is much more strategic and can always be defined in one of the things that people like the most, poker raises many emotions, they come together in context In order to generate the adrenaline necessary for other players to bet more and more, that's where the experience comes in.
Counting cards is sure a lot more challenging when the full deck of 54 cards is being used, and a situation like that requires a totally different strategy.
You're also correct about pokers games, I think poker is a lot more intense and highly strategic, and it's ability to evoke strong emotions is what makes it really thrilling and exciting too.
It requires strategy, experience and skill to be able to navigate your way around the game, especially the psychology aspect of it, such as situations that requires you to read your counterparts' body language and gambling strategy in other to be able to counter them effectively.
Poker requires you to have a deep understanding of the human behaviour, and this is exactly what makes the game super complex to play, compared to other card games.