I often bet according to the following principle:

I pick a game where it is almost 100% certain that the team will win. Often these are odds around 1.10-1.50 However, you can also take higher odds, in which case the profit (but also the risk) is greater.

ThenI pick 2 games where the odds are relatively balanced and very high – e.g. 2.50-3.20 or possibly 3.70 – the higher the better.

Afterthen only combines:
Game 1 to win (1.50)
Game 2 2.50 3.10 2.50
Game 3 2.40 3.20 2.75

1,50×2,50×2,40 = 9,00
1,50×2,50×3,20 = 12,00
1,50×2,50×2,75 = 10,31

1,50×3,10×2,40 = 11,16
1,50×3,10×3,20 = 14,88
1,50×3,10×2,75 = 12,79

1,50×2,50×2,40 = 9,00
1,50×2,50×3,20 = 12,00
1,50×2,50×2,75 = 10,31

The total stake is 45 Euro

You can choose the stake as you like, but then you have to play 9 combinations. At 5 euros per combination bet, this is a 45 euro stake.

The ‘safe play’ must occur, otherwise 45 euros are lost. If the ‘safe play’ occurs, you can win 45 euros at these odds in the worst case (and thus have your stake out again) in the best case you can win 74.40 euros (and thus have 29.40 euros profit).