It's good to score points when playing games.
David is playing a game with his younger brother, and his younger brother is horrible at video games.
David wants his little brother to win the game.
David gives his little brother some tips on how to score points before playing the game.
David loses the game on purpose trying his best to not score a single point.
David's little brother uses David's advice to overtake Danial on  the last turn winning the game.
David's younger brother figures out David's plan, and he's sad that David thinks so little of his abilities.