I would not say that Ralf Rangnick is not experienced, maybe he is experienced but he has not been able to build a good relationship with the players of Manchester United. He could not find the problems of the players. So this season we haven't seen any improvement in Manchester United's performance. United's performance has been deteriorating day by day since the start of the season. Since there are enough star players in the team, we do not see good performance. So now Manchester United have no choice but to change coaches. Coach Poch will not a bad choice for United.
Less out expectation from Manchester United after give contract for Ralf Rangnick because looking what achievement from two German coach on primer league Tuchel and Kloop but Manchester United failed with Ralf Rangnick until right now. I think looking for interim manager is not good thing for Manchester United and why not after Ole out United need permanent manager and looking have experience for giving good achievement for United, now with Ralf Rangnick Manchester United have out from FA CUP and still under not good position standing on primer league.