The Bayern Munich team has been really lucky this season. Because this team did not perform very well in the last stage of the league, on the other hand, if Dortmund had not drawn with two goals in the last match, Bayern Munich could not have secured the title.
Victory is in sight for Dortmund, they only have one last game to win the Bundesliga title this season, but who knows what happened and what are the factors that made them fail to win the match that became the decider. Everyone including the fans was very confident that Dortmund would be the title holders this season, but it turned out that something surprising happened to the team. Yes, nothing is impossible in a game. Apart from that, I see Bayern Munich as the god of luck. A not-so-good performance at the end of the match towards the end of the season was not something that caused Tuchel to be unable to win the title.
Actually I think Dortmund lost to luck. Because of their outstanding performances in the previous matches, they came close to qualifying for the final title. But in the end, the opposition was far behind in comparative performance, yet the match failed to secure a Dortmund victory.