Arsenal are not short of great players in my opinion so far, and I think everyone knows Arsenal have extraordinary players who are able to continue to be contenders in the title race for several seasons. There is only one thing missing from Arsenal, do you know? yeah Arsenal players don't have a winning mentality, when they have experienced a bad game on the field or when Arsenal are behind the score we can see the mentality of players who find it difficult to get up even those who used to play with the system often end up with chaotic games.
I agree with you and I also see that the weakness lies in the mentality. Almost all of Arsenal's players have great abilities, but they lack the mentality that has led to their failure to win the Premier League title in the previous three seasons.
Arteta needs to improve the players' mentality when facing competition, as they have so far lacked confidence.
Finishing second in the standings for three seasons isn't bad considering the quality of the players Arsenal have, so they need to develop a winning mentality for next season.