A prediction for gambling based on chance can only be given by a prophet. Can such an "expert" be a prophet? This is unlikely. Forecasts make sense only when the element of chance in the event (game) does not exceed 50%, and the forecast of the result is based on facts and calculations, the weight of which for the outcome of the event is above 50%.
Even the soothsayers may not accurately predict games all the times. If not their visitors would consists mostly of gamblers who are in search of solutions. Generally, the gaming niche is not supposed to reach this length of inviting a prophet to forecast competitions. Wouldn't it cost the player extra money to consult the powers of spiritual eyes?
It is ridiculous to involve fortune tellers, for example, there is someone who works as a fortune teller and he has a desire to gamble because he thinks he can win, but I am sure that even if fortune tellers gamble, they will not be able to win for sure, they are still the same as other players who only have a smaller chance of winning. I even think that if fortune tellers can win consistently because they can predict their victory, maybe they can beat the bookie who acts as the host who has a greater chance of winning than the player, but of course that is impossible because the bookie will always win anyway.
Now, for example, there are players who really want to win but need guidance from a fortune teller, it will cost more and it seems that players have to spend more money just for guidance, not with the amount of their victory because with the amount of their victory I think it is not certain.