This year, Manchester United brought in quite a few recruits. Recruits are unfamiliar with Erik ten Hag's journey. They couldn't find a bridge to bring them together. Look at their attackers trying to find a goal. It was so luxurious that they missed many scoring opportunities. Goals are the motivation for the whole team to work hard.
Defensively, I would say things have gotten better. When Harry Maguire and De Gea. are missing from the list of starting players. If the situation of the whole team does not improve, it will be easy to receive heavy defeats against big teams.
Erik ten Hag's efforts to unite players to become more cohesive in the team really have to be done, because every player who is recruited into the Manchester United team for this season is for the sake of making the team's appearance better than last season. However, Manchester United's performance seen at the start of this season was still not that good because maybe the players were still not very used to Erik ten Hag's direction so there were still many things that Erik ten Hag needed to improve for this season.