Manchester United is doing a good thing because it has been seen since last season that the defense is their team's weakness and now they are trying to cover this weakness.
I guess that you are a fan of MU, you are the one trying to cover up MU's weakness. I don't see what they are doing well. Recently, MU players did not show anything good against Rosenborg. They were defeated by Rosenborg in a friendly match.
Manchester United is a team that continues to improve for the next season, that is a positive thing and the transfer market is still long, making it more likely that Manchester United will improve their team, if they continue to make changes to their squad, I am quite optimistic that Manchester United could be better next season.
Everyone will also see how Manchester United will perform at the start of next season until the end of next season. Because from what I see, it is not only the defense line that Manchester United needs to improve, but the midfield and attack line also need attention from Manchester United. Because a strong team must be able to excel in all areas in order to win the Premier League and the European League, because Manchester United will also play in the UEL next season.
It is difficult to mention all of MU's problems because, instead of stumbling in a certain stage of competition, there are difficulties throughout. The most prominent problem indeed is that MU has a very poor defense.
I doubt Ten Hag's strategy. I believe that his approach relies more on personal skills than a systematic tactical plan. MU's strikers constantly pressure up front while the defense drops deep, often leaving a lot of space in the midfield. At that time, goalkeeper Andre Onana became a victim of Ten Hag's tactics. I'm afraid that next season if they continue to be unstable, they will rank lower than last season.