We used to do retrospectives at one of my old jobs, because everywhere loves cargo-culting agile and scrum stuff.

I quickly realized that a lot of the problems were largely outside the team's control. It was shit like "The CEO doesn't believe in designers or UX, so he won't hire one, so we spend a lot of time doing that work badly ourselves." Or, "management is making us spend all this time in 'planning meetings' so we don't get anything done"

Stuff that has easy solutions, but we can't do because some idiot or powerful cry-baby is in the way.