Some people have a more understanding of certain things than others, some of these guys that claim to be prediction experts might be those that have studied these teams very well, down to the players fitness level and drawn conclusions that a game has a high possibility of having a particular outcome. All these are still guess work because football isn't mathematics, and there's no particular formula to calculate a win, its all a gamble and shouldn't be depended upon.
These games always come without any loss of any kind from the side of the prediction guys, the victims are the ones placing the bet, they bear the loss and share their gains with the game source. If there can be an agreement between the source and the recipient that they share gains and loss together, There will be a very big reduction in the way these predictions are given to unsuspecting people.
I don't believe in prediction games experts, they're all guess works and anybody can do it. They're not that exceptional.
But if it is analyzed properly and you are an expert in soccer and can calculate the possibility with indicators that you think can provide the possibility of winning potential, maybe you will see the size of the potential in the two teams that will play based on the calculation of your analysis, like you see the strength of the players who are sent out on the field.
But on the other hand it is just a speculation according to one's view, so if it is to gamble, never follow anyone's words for any reason, it is proven that when you bet relying on other people's analysis you really want victory that can make you frantic, and the pleasure it gives is not like when you win a bet with your own way of assessing a team. Don't put your money on the word of others, that's the biggest mistake especially in betting, I agree with you.