Winning the UEFA Champions League trophy will be a big deal and a difficult task for Arsenal to achieve because Arsenal always fails to make use of the opportunity they have to win a trophy. Even though Arsenal plays against weak teams in the UEFA Champions League competition, Arsenal will still find it difficult to win the UEFA Champions League trophy. I think Arsenal should focus more on winning the Premier League title, which is a little easier for them to win than the UEFA Champions League trophy.
I think they would be happy to win at least one trophy, whether it is the Premier League, the Cup, or the Champions League. But the problem with Arsenal is that for several seasons in a row now, they have not been able to win anything at all, even though their squad is quite good. In the Premier League, the difficulty is always that they have dips in form every season. In the Champions League it is even harder because, although Arsenal is a good team, they are clearly not among the strongest in Europe. That is why it always turns out that there is someone stronger than them.