Gambling is a big different from trading where we can share and take used of the same strategies but in gambling, it seems to be not applicable. Gambling is somewhat a big competition where everyone wants to win and so keeping our own strategies is a tool to make big days over the others..
What game you are talking? There's not much of a competition in gambling if you play like sports betting, dice, and other forms of games where there's a house who will accept your bet. Moreover, sports betting is something that I can agreed about sharing strategies because there is no house edge and gamblers has a better chance to win compared to games like dice and the like.