"Last night (Wednesday) was massively disappointing," he admitted.
"We are battling to try and finish second and we realise we cannot afford to drop too many points. We must pick ourselves up for Sunday now and really go for second place.
"The aim is to win our next five games and let the FA Cup Final take care of itself."
"Over the next five matches, we have to try and get ourselves into a run of form so we are on top of our game when we play Arsenal," Giggs told MUTV.
"You want to be going into big games like that in some sort of form. Five games is plenty of time to achieve it, so the aim is to win them all."