If you are ready to lose more money while you are patient to wait for your turn to win, that will not be a problem but most gamblers will not know about that.
In gambling, you need to have patient to win but you also need to know when you should stop playing gambling so you do not lose all the money at once.
Yes, you can be among the top winners but there is a risk that you should pay.
I personally never seen myself in the leader-boards but I am not that kind of guy, however if someone wants to they could definitely grind to be one of the most wagered gamblers without spending too much money on anything. Of course. it can't be zero but it could be like 500 bucks and you could be at top if you are careful enough, and that is against people who gamble thousands, which is why it is definitely entertaining to see those guys go crazy about what you are doing.