What is up with the north of Adelaide?

Looking at emigrating to Adelaide from UK.
Been utilising various indices to research metrics, statistics, and news coverage.

As far as I can tell, anything north of the CBD reads like it’s the badlands.

This is quite disheartening, considering we’re leaving London for all the same reasons.

Are there any residents that can shed some anecdotal light on why crime and societal breakdown has escalated in the north in the past four years?