This might be the best season for Freiburg to finish in top 4 because Leverkusen made a quite bad start and started to recover really late. But Freiburg wasted this chance as well. After a fight with Union Berlin for this goal the winner was Union Berlin. Especially that loss against Union Berlin by 4-2 on the final weeks caused Freiburg to get behind more and lose their chance significantly.
I think Freiburg board must be satisfied with the work Freiburg have been doing so far anyway. They have already been not a regular in top 4 so being right behind that area is still success for them. As long as they maintain their game quality there should be no problem.