Gambling is based on luck for real but that doesn't mean you should be dividing your attention into poker, soccer, horse racing, or roulette all at once, you need to choose a side and learn everything you can about the game. This is the mistake that many gamblers are making, they believe since it's all about luck they should expand the possibility to get lucky and it always end up badly for them.
It's no doubt that Poker for example is all about been cunning, logical and deception to gain power over your opponent, it's called upper advantage, this is way different from games like Blackjack, roulette or Slots.
So imagine doing all these together, most gambling games needs your understanding of the odds and taking them into account, especially when wagering, so how can a gambler get involved in all games at once just to increase their chances of getting lucky? Stop this as it's not a strategy to win, it's a strategy to lose.
You know there is a saying that goes "Jack of all trades, master of none." This phrase summarizes everything about your post. You can't be a gambler you will want to master everything and expect to win something reasonable, most likely you will not win anything because you will only be chasing after a win while a loss will be chasing you back to back, there is no reason to master all gambling games except if you are doing that to increase casinos revenue daily, weekly and monthly.
All my life has always been Basketball and football, the reason is that bookies have the right information I need to use to predict out of next matches, but I'm always mindful of the sportsbooks I use because of the lower line, that's very important one as bookies use that to spread their target for players to lose their stakes. So, anytime I played, If the week is full of weak matches, I do only Football and when there is too much loss, I picked the few ones from Football and add reasonable Basket balls to increase the odd a little bit but I do my assignment before the inclusion of Basket ball matches.