Answer:
1. He wanted to know who caused "us to break up"
2. and also why "I can't sort out my problems"
3. Then he asked me "if I'm unhappy" because Annette got more money than me.
4. he asked "If I thought Annette's a better singer than me"
5. He wanted to know "what I would do next"
6. and then he asked "If I have had thought about giving up singing"
Step-by-step explanation:
Since it changes to the artist's account the yous turn into I or me. Also changed a few words in each question. Read it out loud if this makes sense to you to check my work.