763: you get infected by brainrot so much you don't even know how the pawns move so you lose
1000 reasons you lost a game

763. You started playing chess long ago but just when you were getting the hang of the the sun dies of old age, the earth is shattered leaving nothing behind

769. You're to lazy to play a game you started so you resign
770. You would rather play Fortnite Reload to increase your rank than increase your rating

771. You played a USCF game thinking it was unrated and purposely lost
772. You're missing a cell known as the brain
773. You accidentally started the game and accidentally played a move and lost on time
762. Looking at the engine and realised you're playing bullet so you lose on time