I believe that a person who is looking for strategies should use them all, that is, not stick with just one but use all the ones that are learned or investigated, because what he always gave me to understand in a casino game is that a pattern that is repeated the chances of losing are much higher.
Strategies won't improve your chances at beating the house edge in the long-term in any casino game, but they can beat it in the short-term. This is why strategies like Martingale etc are not completely useless.
Also, patterns in casino games don't exist. It's just gamblers fallacy basically.
The house has a big advantages over any gamblers and it will be very difficult to win a house continually because the house has fast dominion over who ever it is playing with. This is why I do prefer sport bets most time because the house can not determine the overall results which give us an opportunity for us to make some winnings if we are lucky.