However, it is quite reasonable as you say that if we look back at Dortmund's last few matches I think there is absolutely nothing satisfying about their performance, very different from usual. The draws against Mainz and Augsburg are a hot topic of conversation where both of these teams are far below Dortmund but Dortmund can only get a draw in both of these matches. So I think it's only natural that there are some speculations and assumptions that doubt Dortmund in the match against Darmstadt, unexpected results or even worse than the previous two matches are still possible.
Dortmund appeared not good in the last few matches. They have only been able to win one of the last five matches. I don't know what makes their performance appear quite bad this season. But I think Dortmund must really struggle to improve their ranking. Currently many are talking about Ajax at Eredivise who is able to rise from adversity. I hope Dortmund will also be able to appear quite good to get a place in the Champions League.
Dortmund's performance in the last few matches is clearly disappointing and nothing impressive at all but even so, that does not mean Dortmund will continue to get bad results . After all, playing against Darmstadt who are at the bottom of the Bundesliga standings is also certainly a good chance for Dortmund to get good results again with three point of course.
Indeed, there is no blame for anyone who assumes Darmstadt might be able to beat Dortmund or just draw. But yes, I personally remain confident that Dortmund will still succeed in getting full points in the match because if Dortmund still fails in this match then yes, of course Dortmund's situation will become worse.