He made changes to Arsenal's performance but it was still quite difficult for him to present the title and maybe this was still very difficult for them to achieve.
If you are not able to give the English League title, no matter how good he manages the team will not give something bigger because the target of any team will definitely get a degree.
Three consecutive seasons Arteta failed to maintain the team's consistency until the end of the season so that they were left behind in terms of achieving the title.
We have seen Arsenal compete for the title in three consecutive seasons. Arsenal have lost the title in all three seasons for the same reason. Arsenal's squad is strong but their bench team is weak . So we have seen Arsenal's erratic performance only when any experienced player in the squad has suffered an injury. We have seen the same thing repeated in all three seasons. Arsenal management should strengthen their squad more, add more talented players to the squad. Otherwise , it is impossible for this team to win the title.