The result will be the same if you bet on a small amount with many matches and a big amount with few matches depending on teams that you will bet on. I suggest that you bet a huge amount on teams that you think has a huge winning ratio, and make variety of bets.
I think when you bet a very large amount you will experience a very large loss when you lose because no one can guarantee that your bet can win, it's better to keep betting a little by minimizing the risk of potential loss, at least by way of it can manage gambling capital properly and is not greedy.
Quite difficult to see your money fading whenever you place big bets and lose, unlike with many bets that you do chances that some may win and you can continue playing after.
But in terms of risk, both still have it. There's no so called safe or guarantee that you'll be able to be compensated more
on the other side of it.
You have to play well with your bankroll management, lots of gamblers losses
a lot because of failing to plan ahead or most getting greed and bust their money.