~Snip~
Arsenal are not missing out on anything not to be a major contender of the champions league just like Manchester City and Real Madrid have been over the years now. Arsenal are a great team and they have all it takes to win any trophy now. Just like you’ve mentioned, they just lack that winning mentality and that is what have caused them to not have win any trophy for themself till date despite the great performance they pull up every season. If they can have that winning mentality and their mind set at making sure that they get what they want by all means, they can win a trophy in the next season. I have so much believe in them but they always disappointed towards the end of the season.
I admit that Arsenal is one of the great teams in the EPL, but when they set foot in the Champions League, Arsenal always failed to maintain their best performance, especially when facing other strong teams, they always had difficulty winning. Arsenal is a regular team in the Champions League almost every season, but their progress always stops halfway due to being unable to compete with other strong teams.
The mentality of the players has been the main obstacle for Arsenal, which has always reaped failures so far, this situation needs to be corrected to increase the enthusiasm of the players so they have a winning mentality. In my opinion, if Arsenal wants to start winning the Champions League, they must first focus on winning the EPL, the enthusiasm that the players have after successfully winning the EPL trophy can be continued to win the Champions League trophy. So far, I have never ranked Arsenal as one of the favorite teams to win the UCL trophy because the players don't have a winning mentality.