Right, even if a bet seems easy to you there's always a chance of losing it due to the unpredictable nature of the future. Unexpected events can turn even the simplest scenarios into near impossibilities.
When gambling, there is no 100 percent assurance that you are going to win a particular bet, there are some bets where you will have a higher percentage that you are going to win, but we should always keep in mind that anything can still happen, so don’t be overconfident about any bets. I'm sure that’s what’s affecting some gamblers, they have too much confidence in some bets, so they decide to gamble huge amounts of money on bets like that because they have the confidence that they are going to win, but at the end, a slight mistake will happen, and they are going to lose everything.
So if anyone is considering using a large amount of money to bet on odds that seem highly likely to win, like for example 1.0x to 1.1 ; I would honestly advise against it. Instead, I recommend betting with a smaller amount of money but aiming for higher odds to potentially secure a huge win.
Since the odds are kind of small and they have confidence that they are going to win, some people decide to use high amounts of money, but I think the risk is not really worth it. If you are confident about a bet, still make sure you use a reasonable amount of money, don't use an amount that might still affect you if you lose.