Knowing the capabilities of the team/player that you'll be going to support always gives you decent idea if what might be the possible edge either they are the heavy favorite or they are the underdog.
Of course, but there are also people who deliberately choose team that are not favorites and are weaker for larger odds number but they manage to win the bet, whether this is kind of luck or match result that has been arranged from the start, but what is clear is that many incidents like this have occurred in recent times.
I have experienced many defeats with several favorite team and that is what has become belief for me to be more careful with betting choices, no matter how good someone makes predictions and analysis, there must also be chance of failure.
Betting in sports is full of uncertainty and risk, although we have tried to analyze every possibility that exists, but There are always unexpected factors that can affect the outcome of the match, such as the performance of the players on the day, the referee decision, the condition of the players and even luck, it is not wrong for us to play against the public, especially if the one who plays is our favorite team, although they are not the favorites with greater odds of course we luck may be on our side, however, it is important to always consider the higher risks and not bet more than we have.
Yup, there are many factors including the refs and coaches decisions, we can't conclude if how the coach will play their game, and how the opposing teams will counter the system, that's the reason why there are underdogs who manage to win against the heavy favorites, they asume that there's no way that the underdog will win, but when the game start the underdog is more prepared and sometimes, the officials are helping.
Though, there are things that we might be able to anticipate if we are betting during the live game we might see how the game being played and we can assume if who's going to have the edge.