The reason that Q is propping up the FBI recently is because he needs someone to make arrests. He knows the FBI is shady as fuck. He's intentionally deceiving Anons, but maybe it's necessary.
The FBI has been the private police force of the Cabal for a very long time. Plus, the FBI had (and has) illegal programs & helped carry out evil acts like the Las Vegas shooting last year.
Believe Q for the sake of the plan if you want……but don't forget how shady the FBI really is.