Whether he admits it or not, Arteta is still unable to transform Arsenal into a team with a winning mentality. Arteta continues to learn from his mistakes every season, but Arsenal always fails to compete for the title. This team must have the ability to maintain its performance and not easily slip up in matches against small clubs if it wants to win the EPL trophy. Next season will be a new challenge for Arteta to continue to maintain Arsenal quality by always playing optimally in every match. Arsenal already has quality players in all lines and they are still young, their strengths and abilities must be applied in good cooperation between players in order to achieve goals that almost every season they always fail to achieve.
Arsenal is already a team with a winning mentality and this makes them to win but they have few games that gives them a hard time to win. Every team use to have those games that will give them a tough time but it is because they have quality players in their club that can stand up for the big moments, this is what separate the teams that wins the premier league from those that comes second. For two years straight, Arsenal has come second and lost to Manchester city for the title and if Arteta does not sign a player with that type of mentality of a winner, he will not be able to win the premier league because Pep Guardiola has those types of players in his team and it helps him when the tactics are not working for him to win a game. The problem is not the Arsenal manager but the players that they have playing for them.
I strongly disagree with your assessment says that Arsenal already possesses a winning mentality. Arsenal has not won any Premier League titles for more 20 years. I believe, it is necessary for individuals to refrain from providing justifications for Arsenal's great performance and strong mentality. This is to prevent Arsenal from being overly confident in their current position; Consequently, I must acknowledge that Arsenal has demonstrated significant improvements since Arteta took the role of head coach. Both the defensive and attacking lines have made significant improvements, also this has been recorded from the statistic, which is saying arsenal has small gap goals conceded compared to the manchester city, but the consecutive defeats suffered by Arsenal against Manchester City, it clearly demonstrates that Arsenal lack winning mentality
Arteta is extremely dissatisfied with the performance of his attackers during the previous season. Arteta is currently considering bolstering Arsenal's offensive lineup, one of his effort to overhaul the striker position; Therefore, his decision is to add fresh strikers. There are several names being associated with Arsenal, but the club has not yet decided which striker to recruit.
In conclusion, arsenal is still yet far away from having a winning mentality.