In all games of strategy strategy exist besides type games such as lotto and bingo.
In many places on the internet there are many kinds of strategy for bingo but there is something it is stupid, the only method that can be useful when playing bingo is to buy more cards for you will increase your chances of winning in all other strategies is a lie because the numbers are given by a well made point.
So if you want to have more chances of winning at bingo is to buy more cards.
A game of chance means that there is no way that the player can play the game to effect the outcome.
In bingo game each number has the same chance of being selected, this means that each card has the same chance.
Then if you want to have more chances of winning at bingo then you need to buy more cards.
Good Luck.