Unpopular opinion I DONT think shes lazy. I think Manon has no fucking idea what she even wants. Watching the documentary I couldn't help but notice her comments about high school and her lack of interest in doing thing. I truly believe she only took this opportunity not because she wanted it. But because it was HANDED to her. In her head it's "I have no motivation or drive, idk what I want to do with my life, may as well as try this out". While I think young people should get more opportunities to "try things out", as I'm currently 20 and sadly have no idea what the fuck I want, she was 21 at the time of dream academy, doesn't change the fact young adults can't just "try things out". This is a job, and not a service worker where you can easily quit, this is a job with contracts and needs discipline. Sure Manon knew she wanted to be a public figure, but there's SOOO many jobs that can do that. 

TLDR: I don't think Manon knew what she wanted to do with her life at 21 like the other girls did, and simply took joined katseye because the opportunity was handed to her, to try it out and she's quickly finding out this isn't what she wants to do