Every single law enforcement jurisdiction there is will protect abusive police/sheriff etc. Unless you are someone really important, or evidence of the abuse goes very public, the victim of cops is completely powerless and will be ignored and abused by:
Citizen oversight committees
Politicians
DA
City Manager
Offending officers chain of command
No lawyer can do anything reasonable for an average victim of police incompetence, abuse , lies and cover-ups.
That’s the system. It is never different.
There may be some slight chance of secret internal adjustments towards the asshole cops, but it’s probably pretty rare..and doesn’t address the victim of the cop(s) anyway.