One way of approach is to focus on winning certain number of bets in a series of bets. For instance, you can target to win at least 4 bets in a series of 10 bets with the odds being at least 5 odds. This way, you can lose 6 times and win 4 times yet you still remain highly profitable.
It's obvious you're talking about sports betting.
As a gambler, you should know it doesn't work like that. You can place 20 bets and not win a single one. It's not about the number of bets you play, it's about how you play.
Now if you take about 5 odds per bet then you have to stake high before you can win something reasonable.
For instance, if you stake $1 on 5 odds you'll only be winning $5. So it's for people that have a very high staking power. If they stake $100 on 5 odds, that's $500.
If you lose, then You've lost more. And to me, I feel it's not worth the risk. Why am I risking $100 for one game to win just $500? Why not use that $100 into five different bets and place my bets on bigger odds?
Also, the analysis that you'll win 4 out of 10 bets is funny. There's no guarantee of this. It might work once or twice but it's not a system. But look at this. $100 on ten bets, that's $1000. If you win 4 out of 10 bets, that's $2000 with 5 odds each. So you've made a thousand dollars and this is the best-case scenario.
On average, you'll win 1 out of 10 bets and that's a loss of $500.