I could never imagine to see Dortmund in the final match of the Champions League because this team couldn't even get good results in the Bundesliga so far and compared to their performance in the last season they nearly failed. Now they can have the chance to even win the Champions League while compared to the other teams in this tournament they don't have famous superstar players and they didn't invest money to buy expensive players for their team.
Now Dortmund should just focus on the Champions League because there they can get the trophy while there is nothing to get for them in the Bundesliga.
This is football; no one will imagine this will happen. because Dortmund could not even make it into the Bundesliga. So imagine that they are now at the final stage of the Champions League. I believe this is a very big achievement for them. However, I think you should stop imagining that Dortmund will get the Champions League trophy this season, even though they had luck to reach the final stage. In this one, we are talking of the Champions League, and it's the final stage of the competition.
However, they are going to fight for the trophy with a team that is far doing better than them, so this implies that Dortmund are not in good shape to get this trophy because they are going to play the final with Real Madrid, and you know how good and strong Real Madrid is. They have more experienced players than Dortmund. You can see how Real Madrid almost lost to Bayern Munich today, but due to how good and experienced they are, they still struggled and won the match.