If it's left for just me I would even not make him the manager of that club anymore because he has done more than enough damages already and besides everyone is just having a second opinion about this dude because he managed to atleast secure a trophy for Manchester united at the dying minutes and that one Victory has actually blind folded the eyes of many people that ought to see the things that actually don't make him suited as the manager of that great club.
It’s better it wasn’t left for you, if not you might have been someone that just sacks coaches every Season. But let me retrace you back a little bit, Erik Ten Hag getting backed wasn’t because of his performance alone this season but the overall performance since is arrival last two season is what the Board put into consideration and backed Erik Ten Hag for his third season. He had won the carabao cup in his season and took the club to a third place finish. This season he had difficulty replicating the same result or better than previous season because of the injury he faced. The final against Manchester City proved that if all players are available and fit the man can compete a Little in the league.
Also Manchester United have also check the available managers and to me they might have felt that the current coaches or managers available aren’t better than him and instead of going through the process of another rebuild they settled down with Ten Hag