Man utd team is struggling, and the whole team is and it's not just the fault of maguire, even the only goal they score was a player scoring against his own goal, and I don't think maguire have that big of an impact on their offensive line as well, Man utd did nothing in the transfer market to make their team better, and the results are showing already.
These results also cannot be used as a basic benchmark for Manchester United next season, although it is true that Manchester United are not bringing in more new players through the current transfer market. But I'm sure that Manchester United will make changes for the better before next season because Manchester United can take a reference in some of the games they have played at this point.
The poor results obtained by Manchester United in the first game of the season left new jobs for officials and coaches, Ten Hag still had time before the transfer closed to look for new players to strengthen the team. Manchester United is still not able to compete with other strong teams this season, the strength of the squad owned by Ten Hag is still below the team that always dominates the top four. Manchester City, Liverpool, Arsenal, Chelsea and several other teams are very active in the transfer market. If Manchester United does not immediately follow in the footsteps of other big teams, Ten Hag will have to be content to see his team thrown outside the European Zone.