It’s too early to try to predict what will happen next season, whether anyone will be able to compete with Bayern again is not yet clear. Everything will depend on how Bayer can maintain its team, first of all it depends on Alonso, whether he will remain in the team or go to Liverpool, then it depends on whether the leaders will remain in the team or they will go to other teams in the summer, maybe even Bayern will buy himself several players just to weaken the Bayer... And there is still great intrigue as to who will take Tuchel’s place as coach in Bayern.
It is too early to predict that Leverkusen will win Bundesliga this season. There are many matches for surprise from both Leverkusen and Bayern Munich. Honestly it seems Leverkusen has good advantage and likely will be a champion this season.
About a next season, it's harder to predict because Leverkusen might fail to keep Alonso in their club and maybe they will sell some of their star players too. Bayern Munich will spend more money to buy more players in a next summer to strengthen their squad. These changes possibly will change two clubs' strength a lot and maybe Bayern Munich will return to dominate Bundesliga again.
In current situation, no one can blame Harry Kane because he has done more than expectations with 23 games and 27 goals are surely one of the best investment by the Bayern Munich but still they fail to achieve their target which is surely miserable for the fans and here we have to check few things which create problems for the team with sack of Nagelsmann was big mistake
Harry Kane actually wasted some opportunities but no player can score goal from all chances he has. It's better than any prediction as Kane score 27 goals after 23 games for Bayern Munich. It's stats of a beast, one of best world-class striker, not a normal one.
Problems in Bayern Munich come from many positions, the coach, goalkeeper, defenders and midfielders. Together they make up a squad that looks to be strong but inside they have many issues that only wait for chances and challenges from opponents to show off.