Why is hamlet less present in this class act then the previous 3?

In Act IV of "Hamlet," the titular character is less present because the focus shifts to the consequences of his actions and the turmoil in the Danish court following Polonius's death. The narrative explores the reactions of other characters, such as Gertrude, Claudius, and Laertes, which heightens the tension and sets the stage for the upcoming climax. Hamlet's absence serves to emphasize his isolation and the escalating chaos around him, highlighting the impact of his choices on those left to navigate the aftermath.