This is the worst stats for a Premier League manager I have witnessed. How bad Manchester United have been this past years, looking at this stats I can agree that Amorim is not as good as persons hype him to be honestly. Any other manager could do better than Amorim with the current squad.
Those are pretty poor stats in the Premier League.
However, we should give him a chance to improve Manchester United's performance this season. He has already signed several players at very high prices, and he is also committed to improving the culture and rebuilding Manchester United's game from the ground up, and he already has long-term plans for Manchester United. So, giving him time to prove his worth is perfectly reasonable.