Yes, at least in the UCL this time they were able to win against FC Shakhtar Donetsk, with only 1 goal, and that was also OG's goal from the opponent. It's quite sad to see their performance, but indeed, their front line is not too sharp this time, there are many chances that are really missed, yes even though it's quite disappointing but at least they got 3 points in this match.
Since last season Arsenal have always played in the UCL with quality below their actual abilities. Arsenal sometimes only plays well in the Premier League, whereas in other competitions, somehow this team seems to be another club. And in the match against Shakhtar, we saw that Arsenal wasted more of the opportunities they got. I feel that the mental problem of the players at this club has not been resolved until now.
I agree with you that Arsenal look better in the Premier League than in the Champions League, I don't know what makes them not play as well as they do in the domestic league, and I think it has something to do with mentality.
In the Champions League, mentality is very much needed and sometimes the teams that can achieve good results are the teams with a very good mentality, even if their game is not better than their opponents, but their mentality makes them able to rise, as Real Madrid showed.
Against Shakhtar Donetsk, The conversion rate was not so good but a job that got done
Arteta really needs to change things, Need to transfer energy in Premier League performance in the Champions League.
Arsenal has a great defense and midfield but they need players who are ruthless in the final third, Like City, Liverpool, Madrid, etc.
Arsenal is not at that level yet attacking-wise, blunt at the top end.
A lot of chances are wasted, do something otherwise this might be the worst season than what was expected at the start.