Bellingham was Borussia Dortmund's biggest weapon. The same situation was true for Haaland last year. The team got a little worse after Haaland left. After Bellingham left, Dortmund got worse. Dortmund is a team that is adept at recruiting young and talented players. They may be bad this year, but they can make up for that deficiency soon. The observer team is very good.
I don't think that Dortmund will be bad this season even though at the start of this season Dortmund was not yet at the top of the standings after playing three matches in the Bundesliga. But Dortmund still has a lot of matches to prove that they are still strong enough in the Bundesliga, even though Dortmund might not be that good in the UCL, but if it's just in the Bundesliga, I think Dortmund still has to be taken into account by its opponents.