We may blame Ten Hag's, he's in control and responsible for everything. The current squad cannot do anything for Manchester United, they must sign players during the transfer window. Consider Manchester United's defense line, Varane can no longer defend and there is no one to replace him at the moment. Even in their last game against Liverpool, Manchester United could not have equalized, if Klopp had not removed his top players.
It is the coach's strategy and the players he chooses to play are what give him the victory in the match. Despite these, the coaches are not the only ones to bring the victory alone to the club, it is a collective effort that requires the involvement of the management of the team. However, without being told, Manchester United needs to sign new players in the team, and Ten Hag won't agree to that alone without the approval of the managerial team of Manchester United. Anyway, let's see what will be their plans by next season cos I know for sure, they sign new players into the team that will strengthen the frontline and defense.
The defensive line problems have actually been going on since the start of the season. As at the beginning of Onana's arrival, there was a lot of controversy, and when Onana got better, the back line got worse. And then Maguire improved and made Man United's defense stronger but the other back line players started making lots of mistakes. All problems continue to revolve around the back line at the club. So in the upcoming player transfer market, I hope this club will bring in better defenders.
And in the match against Liverpool, the Man United squad could not create gaps in the back line. Because if there are lots of gaps in the back line, Liverpool's attacking players will feast on goals in that match. Hopefully the position as host can be utilized by the Man United squad and Ten Hag.