Sessions was a lose/lose. He sucked as AG, and we lost his senate seat.
Sessions was a do nothing rollover.
Initially, Sessions damaged Trump but may have helped him in the long run by dragging out the Russia Hoax which exposed massive government and media corruption. As Trump says, “We’ll see what happens”.
I think Trump would like to do a lot of do overs including his first Secretary of State, first Chief of Staff, some of his responses to the press etc. As much as I enjoy him, he can be his own worse enemy at times. But yes, having Sessions recuse himself and bring part of the group that set up the special counsel was really bad.