The main sympathy I had with Rangnick is that because the club moved so slow with the whole Solskjaer thing, the squad was mentally broken by the time they made the change. It was an up hill task - the entire atmosphere around the club and fanbase was a complete cesspit by the time Rangnick came in.
He initially actually did well, to rebuild some confidence. We automatically became more solid when he came in, but there was no way he was going to get the players playing a more expressive form of the game after 3 months of constantly getting humiliated. Solskjaer should've gone much, much earlier. Then Etihad happened and they mentally fell apart again, a lot of it because of the PTSD of the first half of the season.