Bayern Munich totally dominated in the first half of the game.
The hosts were on the verge of opening the scoreline in the second minute of the match, as Lewandowski almost scored his 28 goal for this season, but Gnabry was caught offside.
Six minutes later the Pole missed an opportunity to open the scoreline as he was left one on one with the goalkeeper.
However, in the 15th minute of the first half Mathias Joergensen(Zanka) scored an own goal, after Gnabry and Pavard perfectly played the ball in the penalty area.
Benjamin Pavard was not only involved with the first goal of the game, but he scored the second one after Joshua Kimmich centered the ball from a corner and the Frenchman headed it in past Kastenmeier.
Bayern had full control of the ball and that allowed them to cut off Fortuna's defence. That led to an amazing team goal in the 43rd minute.
Joshua Kimmich found Thomas Muller with a neat back heel pass. Muller passed the ball to Robert Lewandowski who scored his 28 goal this season.
Just right the start of the second half, in the 50th minute, Robert Lewandowski scored his second goal of the match after a great assist from Serge Gnabry.
Robert Lewandowski has now scored a goal against every Bundesliga team this season.
The 5th goal of the game came two minutes later as Alphonso Davies showed his skills and put the ball right into the net.
Fortuna had their first chance to score a goal in the 63rd minute, but Neuer made a great save to prevent that.
Bayern Munich are now three points closer on winning the Bundesliga title for the 8th consecutive time.