9/11 Was it an inside job?

Hi I’m Kev from Walled in Media, I believe that 9/11 was an inside job. The proof of this is in the “controlled demolition” of tower number 7. I’ve attached a copy of the video taken from someones mobile that shows the building collapsing in freefall. Please let me know your thoughts, was it demolished or did it collapse for other reasons? See the video below…