Chance of winning alone is definitely not enough and is probably the main reason why so many people lose money. What you need to be looking at is the relation of payout rate to the chance of winning (Expected Value of the bet).
Every prediction that we make must look at the results of the previous match and try to see what percentage the odds are for both the previous match and the upcoming match. I don't understand how do you mean the relationship between the payout rate and the odds of winning at the expected bet value. Is do you mean how the casino pays for each win?
So what if the team A has 90% chance of winning if the odds are set at x1.05. This wouldn't be a good bet to make. And if the team B has only 10% chance of winning, but the odds are set at x15.0 - that'd be a good value bet.
If that's you then will bet on plen A or plen B, I also know that many people look at the odds on every prediction given by the site and they will try to analyze the match before deciding to bet. So many people see the same opportunity in the predictions given, but I also don't forget my own instincts before deciding to bet on a particular match.
Finding a value and deciding where to place your money is really tough. If it's just base from the odd maybe there are more gamblers who can easily assess and manage it and take more money out from the bookies, but in reality it's not. There are more losers the very reason why we keep on seeing more bookies / sports betting that being introduced and keeps of attracting gamblers to use the service.
You need to have that good control inside you, and the right knowledge to guide you in pinking the right game that fits to your understanding.
That is what is called gambling and there is nothing easy in determining the value before deciding to place money on certain bets. Certainly gamblers will never be able to surpass the dealer in case of winning and that's why people say it's better to be a dealer than to be an active gambler. The job of a bookie or gambling site is always to serve customers to make money for them and that's how they make a profit every day.
If you lose control in gambling, the risk of loss will be the responsibility of the gambler himself, therefore a gambler must be able to be responsible for the gambling he is living. Compared to other gambling games, football is a much more rational gamble because we make our own predictions about the outcome and don't completely rely on luck to win the bet.