To what extent is low morale in police departments and "defunding" leading to a rise in crime?

https://www.cnn.com/2021/04/03/us/us-crime-rate-rise-2020/index.html

I’ve read several articles now noting a rise in crime in American cities since the start of the pandemic. One article indicated that homicides went up 88% in 2020 from 2019. A local paper in the Bay Area indicated that while some crimes have gone down, like rape, crimes like vehicle theft have skyrocketed in San Francisco and Oakland (not to mention all the attacks on Asians. A recent story of a man chasing a robber with a machete made national headlines).

The CNN article I linked cites a few factors that may be driving this rise in crime: economic collapse and social anxiety due to the pandemic, as well as de-policing in the wake of BLM protests last year. I’m mostly interested in the latter factor. Do you think police “defunding” and low morale in police departments has contributed to a rise in crime? If not, what do you think is causing this documented rise in crime?