Just like inflation, they are under-reporting crime and dismissing those who can feel it is rising.
To your point...
https://www.themarshallproject.org/2023/07/13/fbi-crime-rates-data-gap-nibrs
https://www.themarshallproject.org/2022/08/15/see-if-police-in-your-state-reported-crime-data-to-the-fbi