Trump cannot escape blame forever. If he does not approve of what Ryan and Sessions are doing, or appearing to be doing, then he needs to replace them. I’m inclined to believe that he’s okay with certain areas being unchanged.
How does the president “replace” the Speaker of the House or the Senate Majority Leader in our system of government?
What on earth are you talking about?
The President has zero Constitutional power to "replace" the Speaker of the House.
And Sessions, Trump's excellent Attorney General, has done nothing warranting "replacement."