In my opinion, OP's story is the definition of gambling. You are sure of your choice then place a bet.
In gambling, winning or losing is normal and is only limited to these 2 choices. If you win then it is luck, which is sometimes very difficult to repeat.
As gamblers, we should be wise in using betting money because if we lose, we might lose that money.
Yes every gambler will only end up with one of two possibilities at the end of the session that is between winning or losing, all of which can never be known unless you have completed the session by seeing the results. Gambling is always random in terms of determining who the winner is and this is the reason why gambling can never be predicted because after all it is a gambling activity that bets your money on increasing or losing.
Of course a rational mindset is the recommended action in gambling, because with this then obviously you will be able to really consider everything from various sides to be able to make a truly wise decision and this benefit can minimize the possibility of regret at the end of the session. As I said above, gambling is always random which means that you or anyone can never know the outcome, and this means that gambling should not be taken too seriously and also should not put any expectations because in many cases they will usually only end up with disappointment due to putting their hopes in a place that is always about uncertainty and this confirms that gambling is an activity for profit, so be careful before you regret it.