Simplify the following text for a Grade 15 native English-speaking person.
Original: But Pascal became more and more extravagant , finally losing his credibility with `` Caesar and Cleopatra '' ( 1945 ) which was the most expensive British movie ever made at that time and a terrible financial and critical flop , although it is more highly regarded today .
Simplified: But Pascal became more and more extravagant , finally losing his credibility with Caesar and Cleopatra ( 1945 ) which was the most expensive British movie ever made at that time and a terrible financial and critical flop , although it is highly regarded today .