The gulf in skill and talent for HC tennis was just obvious. Return of serve, hitting the ball on the rise and changing direction, counter-punching, court positioning etc. Novak is just on another level to Carlos with the predictable bounce and sure footing HC provides, it's no coincidence he's 3-0 against him on HC.
Of course Alcaraz still wasn't far from probably snatching this match, if he took the 2nd set (Novak said himself he probably would have retired) or pushed it to 5. But that's because Novak's an old man in tennis terms.