How does Macbeth show more than one tragic flaw in Act 4?Macbeth by William Shakespeare

Act IV of Macbeth opens with the witches
conjuring both a literal and a figurative "hell-broth broil."  (1) No longer
capable of rational judgments or being able to discriminate good from evil in his paranoia
and (2) "vaulting ambition," Macbeth believes what
the witches tell him if it serves his purposes, since for Macbeth, now "fair is foul and foul is
fair."  So, he takes the advice of the second witch who tells him to be "bloody, bold, and
resolute!" by sending his murderers to kill Macduff's family and him in order to ensure that the
bloodline of Duncan be arrested. Furthering his paranoia, the show of eight kings and Banquo with
a glass in his hand cause Macbeth's blurring of the lines between reality and sinister forces. He
believes that he must eradicate the entire family of Macduff. At this point, the paranoic
Macbeth begins to lose control as the pointless death of Lady Macduff and her son underscore his
loss of any control as well as his descent into evil.