I'll give a simple example and to the best of my knowledge so sorry if it's wrong.
for example, you bet on a dice game with a 99% chance of winning. maybe from a few spins you get a win but after a few spins you will hit this 1% which is determined by the house edge.
maybe my explanation is enough to understand. but if my explanation is wrong, please correct it.
The maximum chance of winning you can expect is 99% due to the presence of the 1% house edge. So even if you win most of the time, the amount of money you will actually win is not 99% of your bet—it will be lower. This means that in the long run, you will still end up losing money. If you are gambling with dice, it's best not to think in the long term, as that will only reduce your chances of winning. Instead, focus on the short term and hope for luck.