You have decided to make money by betting, you are running out of money, you need to raise it quickly. You understand some kind of sport, when viewing, you guess in advance who will win with an accuracy of 90%, go to the betting exchange, open an account, bet and win. Everything. You can't drink experience, as they say. But. If everything were so simple, we would not write this article, and you would not be looking for it. There are several pitfalls here:
The favorite or the “eternal leader” does not always win (the same error of 10% is obvious).
The coefficient on who is most likely to succeed is too low to consider such a bet even slightly profitable (the risks of losing are higher than the possible profit).
There is only one attempt for a deal - it will be impossible to roll back the bet if the layouts have changed, except to sell at a loss.
Knowledge of a sport is a definite plus, but it is unlikely that without constant monitoring of relevant statistics it will be possible to win several deals with a bookmaker in a row.
Betting on the entire amount of the balance in order to get more at a time is generally an absurdity of the highest degree, no matter how much confidence there is in the correct outcome.