1. Do you get vexed up at the player?
2. Do you take it as a common loss by the team just like other days? or
3. Do you curse the player for that?
We need to understand that nobody is above mistakes, inasmuch as the own goal is not intentional, we have to take it as one of those unfortunate incidents in football. I'll naturally be angry at the player that mistakenly scored in his own net, I'm losing my bet because of his blunder, but then I'll move on from the lose after the match. Where I won't forgive the player is if it's proven that the own goal is as a result of match fixing, then as many as are involved in it I won't be happy with them. That is why I always advocate to always gamble with the amount that you can afford to loose because anything can happen in a match, it can favor your bet or it won't.
There are many different factors to determine whether an own goal is unintentional or intentional, just by reviewing the situation, we can understand whether the human factor was bribed or was actually just a random accident in the match. Once there are many suspicions of bribery, there is no forgiveness and although angry, we can do nothing but move to a more prestigious club, and it can be said that there are very few such cases in the major leagues, most are just unexpected accidents from a player's lack of concentration.