I agree with you, and I think if they knew Arsenal before Arteta became manager, Arteta has slowly made many improvements and progress for Arsenal since his arrival in 2019.
And although their performance in the Premier League has been inconsistent, Arsenal's results over the past two seasons have consistently finished in second place in the table, which means Arsenal are in a better position compared to the big teams below them.
In my opinion, Mikel Arteta has been doing a great job since his arrival in Arsenal. He contributed significantly to the team in various ways and has transformed Arsenal for the better. It's been observed that over the past three seasons, Arsenal always started strong, winning around 80% of their early matches, but ended up fallen short of expectations. I believe it wasn't the right time for Mikel Arteta to lift the trophy in previous seasons, but with the new signings they've made this season, I'm hopeful Arsenal might finally win the Premier League title this season. I know the season will be more challenging for Arteta than previous ones, because other competing clubs have high expectations of winning the Premier League title too, and I'm not surprised, given the quality of players these teams have, making it difficult to predict the title winner.
Arteta is definitely helping Arsenal to perform well in the many competitions but usually failed to achieve title in every season. Arteta need to change is strategy to make the players perform better to win the league trophy. That is only the thing Arteta can do to make the fans happy, because you can't be wining matches and later in the middle of the season you will perform weak and make other big club overtake and achieve the league title, that you are chasing for our may years. I just always think Arteta is not a right manager to win trophies for Arsenal. This season as started and they start with good form if the season comes to the middle you will see there performance will definitely reduce but let see how the season own will be since they have key players in the club currently and can help them perform better in the league competition. Let see if Arsenal can get the chance this time and win the league title.