In terms of mentality, perhaps Borussia Drtmund in the Champions league does not have great readiness, even in the Bundesliga, Dortmund is unable to appear consistently for reasons that I dont need to mention and we can all know that this club always sell it reliable players so there is no excuse if they fail to compete in the group F because they have to compete with top clubs from other leagues which are much stronger in terms of performance and to compete with Newcastle might be more difficult especially if they have to compete with Paris SG.
I am not saying Borussia dortmund are bad but in reality it too early for dortmund to be able to qualify for the round of 16.
Even without Bellingham this season, Dortmund strength is still enough to be taken into account by their opponents in the Champions League. I will not miss the games they play especially Dortmund fill in Group F which is very interesting to watch every game they play.
Haller is the spearhead of Dortmund this season. I hope he can contribute many goals in the Champions League match. Karim Adeyemi is still very young and I'm sure he will find his golden age this season. However, Dotmund's performance in the Bundesliga seems less than perfect at the start of this season. But I believe they are candidates in the top 4 until the end of the season.