1

Select bets with only 2 possibility (such as under/over)

2

Find 2 bet agencies that offer a quote that is greater than 2, one for a result and the other one for the different result (ie Agency A pays 2,25 for under, Agency B pays 3,1 for over)

3

Go and bet the same amount of money in the 2 agencies.

1

Firstly, it should be the amount you're willing to lose  never bet your last money.

2

If you've chosen your strategy and determined the portion of the bankroll for each bet, stick to it. ...

3

If you decide to increase your bets  do it slowly and over longer periods.