You are right, watching Manchester United game again Leicester City I noticed a little change in the performance of the team though they played against a weak team but they had this zeal to win the game and the way the players perform in the game shows that the former manager was not playing the players in their right position and that was part of the reason why the players were not performing well. Good observation, Bruno had the chances to move forward and he created good chances and they helped the team to make progress in the game.
Positioning players in the wrong line will result in the team being worse as we have seen in Manchester United when Ten Hag was not fired. While when Ten Hag was fired, everything started to look different and the players also started to get excited again when they could be in the line that they were able to master well in the match. And the victory with a lot of scores has given a special assessment to Ten Hag where he was indeed unable to maximize the potential of the players in the line that is more suitable for the current Manchester United players.
Manchester United was convincing with their performances in the game against Leicester City no doubt and in as much as I totally agree with you opinions that it was because of the tactical approach Ruud Van Nisterooy adopted which was clearly different from what we were seeing when Erik ten Hag was still in charge, I suggest we wait for when the team under the interim manager will face a stronger team like Chelsea who they face this weekend in the English Premier League Chelsea before we can ascertain the effectiveness of Van Nisterooy's effectiveness.
A 5:2 win against Leicester City is a good result but winning with such amount of goal margin against Chelsea will be a great result.