Bayern Leverkusen is below Bayern Munich with 6 points. There is no possibility that they can be able to win all the remaining games they have. Also, Bayern has more chances to get more point than Leverkusen from the games left to play.
Lots of possibility for Bayern to win the league so no need to elaborate much on this.
That can be done if the players are in good condition and if the players get injured it will affect the team's condition. I agree that Bayern Munich is much more favored to win the Bundesliga title, besides having more points they also look more convincing. But all possibilities need to be anticipated and as many people say that Bayern Munich must also focus on the Champions League.
If in the end Leverkusen can get their second title in a row, it is nothing more than luck because in terms of quality Bayern Munich should have entered the final stage to lock in the title.