I think it's not just the finishing that looks worse where almost all of Manchester United's positions are not performing well.
The goal happened because of a mistake in the midfield where Casimero made a mistake and the defenders also didn't try to cover the empty position before Liverpool players scored.
Superior in terms of possession of the ball is not a reference because they even had difficulty scoring goals or suppressing Liverpool's attacks.
Exactly, every position in Manchester United was worst against Liverpool, no player was able to calm the ball, and they were just playing like a team that failed to have any preparation before playing their games, Casemiro has entirely finished and I wonder why Manchester United failed to sell him when Saudi club request for him, just nothing good about Casemiro any longer, they bought the player who has already finished his career for another team, Ten Hag's had no idea of the players that could help a team. How can a manager who is looking for a goal will bench Amad for Rashford? The defense did not look different from the previous seasons, I believe Maguire will defend much better than De Ligt.
Erik Ten Hak must also give the opportunity to play to other goalkeepers because I see Onana has no instinct at all in making saves, especially in this match which conceded three goals.
This is a very unwanted defeat and they have already dropped some points in the Premier League, if this is not evaluated then I think Manchester United will find it increasingly difficult to keep up with the game of other teams.
Ten Hags is the most stupid manager I've ever seen, you used Onana throughout last season and conceded a lot of goals, he continued with him during pre-season games, and he's still using Onana in Premier League games, to be honest, Onana is a waste, there's no risk he can take to save Manchester United. Look at Raya, Arsenal's goalkeeper, against Brighton, Rice was sent off in the second half and played minus one, if not for him, Arsenal would have lost the game, but he made a lot of saves to share the points. I believe if that was a Manchester United player, they would concede more than ten goals.