Consider the opening word: Foai (Give). It is not "I will try," nor "I will work harder." It is a passive plea—the singer acknowledges that a new heart cannot be self-generated. It must be gifted.
She had been handed a crumpled lottery ticket by a stranger the previous afternoon: a single, glossy square that promised the possibility of “un million d’euros” and, more importantly, a momentary escape from the monotony of rent, bills, and the endless search for a breakthrough hit. She tucked the ticket into the pocket of her denim jacket, feeling the papery edge against her thigh like a secret promise. foai maia le loto fou lyrics
Grant unto me the new heart...