That is a strategy that can be done, I mean to get profit from the total bets we make. But usually some people are not patient enough to win that way, so what is done is to make a double bet.
It’s important to note that even making multiple bets may not always guarantee consistent wins in gambling as some people may think, in the long run it’s still a game of luck and everyone is just taking chances.
There are people who even after staking or betting on multiple predictions, still end up losing all or maybe just winning one, which leaves them in a loss at the end of the day. You’re right about what you said, the most important thing in gambling is self control, it doesn’t matter what strategy a gambler choose to use, as long as they can control themselves and avoid gambling excessively, they’ll be able to avoid getting into gambling troubles.