Dortmund will try to qualify for the Champions League. Maybe Dortmund will win against Holstein Kiel. But whether Dortmund can stay in the top four of the table will depend on Freiburg's performance. If Freiburg can win against Frankfurt, Dortmund will remain in fifth place in the table. And if Freiburg vs Frankfurt match is drawn or Frankfurt can win, Dortmund will be able to occupy fourth place in the table. I am mainly waiting for the result of Frankfurt vs Freiburg match. Dortmund will win against Holstein Kiel, it is certain.
The result does not entirely depend on Freiburg, I mean Dortmund can qualify for the UCL on their own accord even though Freiburg beats Frankfurt. Dortmund must try to win big from Kiel at least 4-0 so even if Freiburg wins Dortmund can still get the top 4 because they win the goal difference over Frankfurt if the result is the opposite or Freiburg loses, they only need to win by a few goals over Kiel. So at this moment it depends on how they live it whether they will depend on Freiburg vs Frankfurt results or want to try with their own strength.