A good start would be requiring police officers to carry individual liability insurance so that municipalities aren't paying for these lawsuits. If someone can't get insurance, they can no longer be a cop.
It has to be a criminal thing because the top brass and civil servants need RICO like prosecution and tossed in jail along with the guy who gets the insurance ding.
I don't expect Congress to do so in the foreseeable future (regardless of how the 2026 midterms go), but I hope more states will adopt "converse 1983" laws [1].
[1] https://www.lawfaremedia.org/article/can-state-law-remedy-co...