Erik Ten Hak's strategy worked flawlessly in that match, Super Pressing was done very well by the players, the rotation was quite impactful, with Erik Ten Hak using Diogo Dalot, Raphael Varane, Lisandro Martinez and Tyrell Malacia to defend the defence.
Manchester United's game scheme already looks good from the start of the game, despite losing possession of the ball, the only player I think is less than optimal is Bruno Fernandez, this player has lost the ball at his feet several times due to holding too much.
so there are some opportunities that can't be solved perfectly.
Other Manchester United players played quite impressively, even Mohamed Salah was made difficult to develop and create chances, so Liverpool had quite a hard time breaking into United's defense, many Liverpool players were frustrated and couldn't do much in the match.
Lisandro Martinez role was quite prominent in manchester United third game. It's as if he got a special task from Erik ten Hag to look after three Liverpool players (Mo. Salah, Luis Diaz and Firmino). The three of them were made unable to move freely as usual with the help of Raphael Varane.
You can see how Jadon Sancho goal happened. When Elanga delivered a pull pass to jadon Sancho, Trent Alexander-Arnold I thought should help chase to dissuade Sancho when he attempted to deflect a shot towards the Liverpool goal. He (Trent Arnold) is seen standing at the sight of his comrade lying down.