Mainoo and Garnacho made important contributions to the team, but as you mentioned, these two players and even Antony were players who contributed almost nothing to the team. I always remember Manchester United with its amazing players. Manchester should play with legendary players like Van Nistelrooy, Giggs, Scholes, CR7, Rooney. Even though they don't seem very weak, they should always be in the championship race.
Manchester United is made up of complex formulation of players but this is no need for threatening because the manager have everything settled. Erik Ten Hag have more challenges to settle in Old Trafford, there's just couple of times for him to rise from the down moments and put in enough working for straight winnings. Manchester United have good rising talents and I'm pretty sure they will do better to make things right for the club. The Red Devils will continue to push for accomplishment of trophies but it doesn't mean they will relent because there's more to make happen.