I have seen people thinking that they have cracked the game and have found a pattern that allows them to guess the outcome of the next game. Can you imagine how illogical that thought is? If they knew that the results are randomly generated each time and aren't manual, they wouldn't say such things, but many people believe in such things.
Sometimes players are like that, they want to play so much that they think they are at a level where they think the prediction is right for them, sometimes it happens with newbies when they run out of money, and when they get the money for it, all they do is spend it all without any kind of success.
Sometimes with the combination of betting they think they can have the ideal Formula to win , or due to their experience, that Allows them to say that they can or have the Prediction thing ready, but no, there are always many things that influence, the game will always be Random.
You can also create and try different strategies on your own money, but almost all of them are also unsuccessful. You can understand this only after playing a lot, and if the strategies are very unsuccessful, then the loss of money will be very fast. It happens that some players, having come up with a strategy, do not want to test it with small bets, but are ready to bet everything on it, even take borrowed funds, which of course does not look like the smartest thing to do. Ultimately, it is better to test your theories on small bets, without borrowed funds.