Consistency is indeed Arsenal's problem, even in the last 2 seasons they have had the same problem and also the problem of the team's mentality slumping when they are under pressure, causing the team's performance to decline.
There are many things that Arteta needs to do to enable Arsenal to win the Premier League title, but we can see that in the last 2 seasons there has been positive progress so that it is also possible for Arsenal to win the Premier League trophy in the next season and what must also be remembered is that The Premier League competition is very competitive and it will not be easy for all teams.
In the last two seasons Arteta has managed to improve Arsenal performance and mentality in the competition for trophies in the Premier League, but Arteta has not been able to make Arsenal have consistency in every crucial match, Arsenal this season managed to win points from strong teams in the league but unfortunately Arsenal often lose points from weak teams, the match against Aston Villa and Fulham was of course a match that they should have been able to win when the level of the two teams was lower, but in fact Arsenal had to lose important point which in the end made their chances of winning the Premier League this season disappear, Aston Villa since being coached by Unai Emery has often been a nightmare for Arsenal because if we remember last season, In fact, Aston Villa was also the one who made Arsenal lose the opportunity to winner.
Next season Arteta should be able to learn from the failures that have occurred in the last two seasons, so it is very important for Arteta to in addition to improving the stability of the squad, mentality and also Arsenal performance, of course he must be able to make Arsenal very consistent in their performance, so that of course Arsenal will be able to break Manchester City dominance in the Premier League as well as get their EPL trophy after the last 22 seasons Arsenal failed.