santiagos one character flaw is being too prideful or "hubris" in what sense is santiago a tragic hero?

We know that Santiago is old and that his prime has long past. Still we see him go and fight something that could very well kill him. Regardless of the outcome Santiago can' get his youth back.

At first, Santiago’s plight seems rather hopeless. He has gone eighty-four days without catching a fish, and he is the laughingstock of his small village. Regardless of his past, the old man determines to change his luck and sail out farther than he or the other fishermen ever have before. His commitment to sailing out to where the big fish are testifies to the depth of his pride. Later, after the sharks have destroyed his prize marlin, Santiago chastises himself for his hubris, claiming that it has ruined both the marlin and himself. Yet, Santiago’s pride also enables him to achieve what he otherwise would not. Not until he meets and battles the marlin are his skills as a fisherman truly put to the test. In other words, the pride that leads to the destruction of his quarry also helps him earn the deeper respect of the village fishermen and secures him the prized companionship of the boy.

Santiago is considered by many readers to be a tragic hero, in that his greatest strength—his pride—leads to his eventual downfall. At first, Santiago’s plight seems rather hopeless. He has gone eighty-four days without catching a fish, and he is the laughingstock of his small village. Regardless of his past, the old man determines to change his luck and sail out farther than he or the other fishermen ever have before. His commitment to sailing out to where the big fish are testifies to the depth of his pride. Later, after the sharks have destroyed his prize marlin, Santiago chastises himself for his hubris, claiming that it has ruined both the marlin and himself. Yet, Santiago’s pride also enables him to achieve what he otherwise would not. Not until he meets and battles the marlin are his skills as a fisherman truly put to the test. In other words, the pride that leads to the destruction of his quarry also helps him earn the deeper respect of the village fishermen and secures him the prized companionship of the boy.