There aren’t enough qualified candidates because they literally are not interested in hiring people that can think for themselves rather than blindly follow orders and protocol. I know how petty this statement sounds, and you’re probably thinking “ok there, someone has an axe to grind or needs to learn some nuance,” but read this news article about what (legally!) disqualifies a candidate from being hired as an officer:

https://abcnews.go.com/US/court-oks-barring-high-iqs-cops/st...