Although it's true, I don't think he did enough, but you have to realize he was under constant pressure. Russiagate was almost never ending, and the opposition was doing everything they could to make him look bad. The sheep that believed everything from corporate media truly believed he was a despot looking to destroy America. Had he been able to truly vet those within the executive branch, he possibly could have done more. Remember, although many republicans never came out directly against Trump, he had quite a few opposing him as well. The D.C. club were thoroughly against Trump, because they are the swamp.President Trump wouldn't be bullied by the 'deep state' and that drove them mad...why should he be different.
All previous Presidents left 'deep state' fiefdoms alone, but President Trump not only didn't leave them alone, he laughed at them...mistake.