My gambling strategy in Hocky games is that i pick couple of top teams or weaker one and bet on the top teams to win and on the weaker one to lose and i chose NHL because odds in those games always high and if lost the bet i bet on the same team for the next game with doubling the amount sometimes jusrtthe same amount depends on their situation and opponent's.
I honestly do not even have a strategy because of the fact its not needed at all, with gambling its based on luck and not on a strategy in my eyes.
It is needed especially if you are not playing those luck-based games. Because there are games that are not truly basing on our luck like sports betting and poker. But if you are thinking that way, then you can just play poker anytime you want without thinking of any strategy and as well as playing sports betting without doing some background research for teams involved for a match.