I cannot mention even a single superstition that I strictly believe in when gambling, neither in dice nor in sports betting, poker and other card games, cockfighting, lottery, etc. I can only remember when I was younger and I really had a lot of wild dreams and plans that I badly needed to become rich. Every time I buy a lottery ticket, I would keep it inside the pages of the bible. This is not peculiar to me for sure. I know a lot of people are also doing this. I also do this to my raffle coupons.
Well, superstitions as they are, they did not make me win at all.
I am convinced that any superstition negatively affects a person and his potential. If a gambler has a certain amount of luck and flair in gambling, then any superstition will reduce their actions. Based on this, only an indifferent person to external factors and any prejudices has a much greater chance of getting a good result.
It may be true, but superstition, just like opium and religion, creates a dreamy state in them. And in this state, they have strong hope, belief, positive expectations, and so on. I have seen how gamblers are changed a lot by their superstitions and the very positive feeling of luck that springs forth. Superstitions are giving them a very strong conviction of winning.
This brings back memories of the great Efren “Bata” Reyes, also called as the “The Magician”. "He holds the record of being the first non-American winner of the US Open Nine Ball Championship and the first player in WPA history to win world championships in two different disciplines."
[1] He was so superstitious that he said to avoid taking a bath 3 days before his match. I don't know if he is betting for himself in his every match but a lot of people are betting for him.
[1]
https://www.thextraordinary.org/efren-bata-reyes