The rot, on a global level, goes far deeper than just heads of states or organizations.
An election doesn’t change a single career Fed Gov employee in the ranks.
FBI, CIA, NSA, DHS, DOE, DOE, DOT, DOD, DOS, etc.
I don’t see a way to fix something this broken, other than starting over.
Unfortunately, you are right. A good example is what happened in the House this week and how many that are supposed to be on our side are deep state.
Those lifers in the Senate are all assistant democrats and they almost have to die out to get rid of them. Then they just replace one bad one with another bad one. Seems kind of futile.