Eric Ten Hag is not really the best guy for Manchester united, he's only managing that position to my own opinion because if he was the best for them, winning FA Cup would not have been the only thing to celebrate for them. I agree that was a great height but that's not just it. It could have been bigger for them. Maybe they would have moved closer in the table standing if they were more consistent in their goal streaks.
I also see that Manchester United's consistency in scoring goals this season is not that extraordinary, so Manchester United must finish this season in a ranking that is not good enough for them. However, by winning an FA Cup trophy this season, at least it has restored more enthusiasm and fatigue for the Manchester United players this season so that next season they will try again more consistently to score goals from the start to the end of the season. Because things like that can bring a team to a pretty good ranking in the standings.