This is a weak mindset. Since when does anger and smashing stuff mean passion?
How about staying level headed, and objectively analysing yourself, your mistakes and why you lost, and then building on it for next time. Be a, I dunno, adult? Not a child throwing a temper tantrum.
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.
There’s always something to learn, and always room for improvement, never settle.