Complex sentence: Embarrassed and enraged, he orders that they change immediately before meeting Schraeder and then he turns onto Maria, who confronts him and tries to get him to understand that he does not know his children nor how much that they need him.
Split into simpler sentences: Embarrassed and enraged, he orders that they change immediately before meeting Schraeder and then he turns onto Maria. Maria confronts him and tries to get him to understand that he does not know his children nor how much that they need him.