On the upside, three states so far have abolished qualified immunity (New Mexico joined the list earlier this year). The first was Colorado in 2020. So there's hope this may spread to other states in the coming years.
The problem is that abuse tends to vastly outpace incremental reform. We are just now making serious strides to legalizing cannabis and decriminalizing other sorts of drug use. That's great, but stack it up against the length of the drug war, the billions involved, and the number of lives it has impacted.
It seems that every year, year after year, and decade after decade police are only ever getting more and more powerful.