Placing high trust in the game can make you mentally disturbed when you fail to win a bet, as long as the game is not finished, anything can still happen. He should have learned from several football plays that things can change at the last minute, nothing is certain as long as the match has not officially ended.
An incident that happened to your friend because he was too obsessed with winning the game, even though in the game there are only possibilities, losing and winning. I prefer to put the outcome of the game as luck, they must be ready to accept whatever the outcome of the game is, if you are not ready to lose, never try to place a bet on any game.
Human behavior, especially in high-stress environments like competitive sports, is incredibly volatile. No algorithm, no amount of data, can truly predict how a game will turn out until the very last second. Why? Because human emotions and reactions cant be quantified or anticipated to a 100% degree, especially in sports or games. Remember, remember, remember: placing blind trust in a game is setting oneself up for disappointment and mental disturbances.
Additionally, your friend's obsession with the game underscores the fragile line between passion and obsession. Its a problem many gamblers face: mistaking obsession for passion. Online gambling, especially, manipulates human behavior to favor addiction. Theres a reason they call it "betting" and not "winning." If you're not emotionally and mentally prepared for the bitter taste of defeat, then stepping into the world of gambling is a grave mistake. Always, always, always be prepared for both outcomes: winning and losing.