I'm gonna say Dortmund and Freiburg will qualify for Champions League, assuming Freiburg will beat Frankfurt in their home and Dortmund will farm points from Holstein Kiel. We can see on their recent history, both of them perform well.
It's hard to believe Dortmund will lose against Holstein Kiel, I think it's a sure match for Dortmund.
This possibility can still happen if at least Freiburg wins by a goal difference that can relieve Dortmund in conditions of productivity and Dortmund who must be able to get a victory with a greater goal difference.
If in the end Freiburg only win narrowly and Dortmund also do the same (for example 1 goal for each match) then in the end they will not be able to qualify because Dortmund mathematically even though Dortmund's points are balanced later but they will lose to Franfurt for goal difference.
At the moment for the last match all they have to do is try to win with a striking score regardless of the results for Freiburg and Franfurt as long as Dortmund manage to score at least 4 or more goals then they will be comfortable in the Champions League zone and I think the chance is still very big to happen especially with the coach now it looks like the end of the season they don't want to make the situation stop until the zone they don't want because Dortmund's place is the Champions League.