Yes, I think gamblers like to blame others. And these are of course the players and or teams that are responsible for the gamblers losing their bet. Still, there is only one person you should blame and that is the gambler himself, as he himself made the decision to bet money. If you can't stand losing once, it's better not to bet any money at all, then you can't lose in the end.
Sometimes people tend to blame others because they cannot accept that it is their responsibility and it is them who got a wrong thing denial comes after losses they need to process that and deal with it. We need to be accountable in everything that we are doing because that is what we need to do , there are still gamblers who did not do this thing like me, when I lose I will accept it even it hurts and I lose again some money.