It's just the beginning of the season, we can't conclude anything yet, but as seen in Manchester United's performance in the first week, I think they have played a little better, even though the final result is still a loss, but at least there is progress from the team's game, so for this season anything is still possible and I will not underestimate Manchester United this season.
Losing by one goal against a strong team is very common for a team that slumped last season and is trying to bounce back this season. And I think Manchester United needs to make more significant changes in other matches this season, because every opportunity must be capitalized on to win, even by a small margin. I also wouldn't say Manchester United is in good shape, despite the slight changes in their performance in their first match of the season. Because that's far from enough for them, who are working on improving all aspects to become better than before.
If they continue to lose, there will be no change at all, even if they change their playing style. To be honest, we don't know whether Manchester United is improving or Arsenal is declining in yesterday's match, we simply don't know.
And it’s true that this is just the start of the season, so we don’t know how it will turn out. A team’s performance can change at any point during the season, either improving or worsening, depending on how they adapt and progress in securing victories in each match. Underestimating them at the start of the season is overly excessive, except for those who are disappointed.