You had NPD, and sometimes you had what they called Narc crash, where you believed that someone or something was threatening your huge and confident image. Even when going to therapy as treatment the Narcissism was still there

“It seems you lost” Alex said to you as you lost a chess game to him

You felt infuriated and began to yell at him because he made you feel little

“Calm down, practice makes perfect and I’m sure you’ll win the tournament” Alex said in an attempt to calm you down