Even after west ham and their first goal, I still believed Arsenal was more than capable enough to be able to deliver, I expected that since the first half didn't looked so we'll hopefully by the second half Arsenal will have a comeback and will draw if it turns out worse but after the second goal and I observed Arsenal still had a dull performance, I concluded Arsenal was going to loose this match and it was Avery sad they couldn't secure a single goal from this match, this got my heart broken the more, currently Arsenal may likely fall back to struggling again.
Arsenal is a good team and they had a good performance so far in this season, also they have a good coach with knowledge in their team. But this can't be the reason to say Arsenal should win all the games in a league like Premier League. I was also expecting to see Arsenal winning the game against West Ham however I didn't bet on this team for the match against West Ham, but they didn't
However, Arteta and many fans of Arsenal think they lost the game mostly because of the mistakes the referee made during this game otherwise they could have had another result in this game.
The chemistry between the coach and the team is great for Arsenal and they have gone through good and bad times now to know each other very well. Those experiences they have gone through together will strengthen them for potential bad times that might still be coming, but this year is also a year where fans and club owners want to see the results. I am pretty sure about that. They want to avoid that Arsenal starts a new era where they become second all the time as they did when Arsene Wenger was still the coach.