What is the cause of the short solioquy Claudius says at the end of scene three?

At the end of Act 3, Scene 3 in Shakespeare's "Hamlet," Claudius delivers a short soliloquy that reveals his profound guilt and inner turmoil over the murder of his brother, King Hamlet. He acknowledges that he cannot pray for forgiveness because he still enjoys the fruits of his crime—his power and the queen. This moment illustrates Claudius's recognition of his moral corruption and the psychological consequences of his actions, highlighting the theme of guilt in the play. Ultimately, his inability to repent underscores the complexity of his character and the play's exploration of sin and redemption.