The debut - Work Bitch (she had to work for her success)
The stardom - Alien (made her feel alone)
The innocent girl - Perfume (innocent and vulnerable under the grip of a potentially cheating boyfriend, song meant to victimize Britney)
The media's overexposure - ? That kinda ties in with the stardom part so Alien still.
"i'm not that innocent'' - Tik Tik Boom (sex sex sex sex)
The injured knee - Body Ache
"Destroying" her own career - Well, that would be the album itself.
The bipolar collapse - Til It's Gone (bae loses everything )
The fall - Kinda ties in with collapse so Til It's Gone again.
The comeback - Now That I Found You (peace, happiness and joy <3) and Chillin' With You cuz she got lazy af
And then Passenger could possibly apply to allowing other people around her to be in control instead of her. IDK Don't Cry, ISBE and HOT could be anything else.