Even though Arsenal's game is good, not being able to win the Premier League or the Champions League will not mean anything because the success of a club can be seen from how many titles they have won. In the previous few seasons, Arsenal's performance was good, but they had a hard time winning the title and even couldn't maintain consistency until the end of the season. This team doesn't seem to have a winning mentality and I think it's difficult to inspire a team if they don't have a high mentality and confidence.
I fully support your opinion and it is true that Arsenal in every season always fail even though the title is in front of him when he has a very thin difference in last season. The team's mentality is one of the important factors that Arsenal should have to at least get a degree in EPL to arouse self-confidence in all players to get better achievements in other competitions such as UCL. But I am not surprised if Arsenal continues like this because in my opinion Arsenal need to speculate to try to find a new coach. Because what I see the players owned by Arsenal is very good, but in terms of mentality, it is still very lacking. While the role of the coach is very important to give a great mentality to the players.