I'm french and i'll let you know in france we always use the belgian as exemple for stupid. Most of jokes involving stupid things start with "what is a belgian that...." or "why do belgians do...." and they're called belgian jokes.
Belgians got good ones too, for instance one that i like very much is "why aren't there lamp post on french highways all the way like in belgium?" "because french people think they're bright"
The phrase “it’s just a game” is such a weak mindset. You are ok with what happened, losing, imperfection of a craft. When you stop getting angry after losing, you’ve lost twice.