In my perspective losing their last match against Liverpool is not the big deal. The team needs consistency. They have been playing well for a long time and then they broke down in the end or middle stages. If the team's players cannot play with pressure when they are facing top opponents, then they will fall behind in the title race. Arsenal are undoubtedly a good team but they cannot do well at the right time. To develop the team strength If someone in the team is injured, then they need to have better players as back-up. Apart from that, they need to have good clinical strikers, otherwise no matter how good the squad is, the results will not be good. The team needs to perform consistently throughout the season. If they can take a strong position mentally in big matches, then they will definitely be able to do well.
I think the defeat against Liverpool is understandable because Liverpool are a strong team and they were playing at home, so it's natural for Liverpool to win. As for Arsenal, I don't think this match will have any impact, especially since it's still early in the season. In fact, this could be a benchmark for Arteta in improving the team.
Overall, Arsenal's strength is quite even across all lines, and compared to last season, they've found many options in the front line, especially. Now it's just a matter of mentality and confidence for the Arsenal players to maintain consistent performance and be able to play consistently under pressure. So, if that's successful, I'm quite optimistic about Arsenal this season, because in terms of quality and team strength, Arsenal is quite capable this season.