I understand that Manchester United is far from playing their best football. With the way other teams are performing it will be hard for them to make the champoins league spot. What Manchester United should do is to take their focus off the top 4 and make sure they can make the Europa league next season. But they should focus more on rebuilding the team next season.
Rather than forcing to qualify for Champions or Europa League, it's better for them to develop their club first.
They need to find two wingers, midfielders and few defenders. Although Onana sometimes make mistakes, but we have Bayindir who can replace Onana. While the other positions I mentioned before, Manchester United really lack of good players.
Player transfers for Manchester United are very poorly organised. The alternatives to the players in the main squad are not of the quality to replace them. We are watching the worst-adjusted Manchester United of recent years. Although Hojlund appeared to be fit in the UCL, he has been absent in the league. They need a striker urgently. I don't think they will have a goalkeeper problem, but they are definitely missing a forward.