Bayern Munich's survival in the Champions League is now very difficult as I don't think they can beat Manchester City in the second leg. That's why Bayern Munich is now expected to focus heavily on the Bundesliga. Because Bayern Munich has the potential to win the Bundesliga title.
As long as Bayern Munich can work well as a team, there will be a chance to win against Manchester City. Some of the teams that have beaten Manchester City use good teamwork and always guard their attacking players like Erling Haaland, so it's not easy to get the ball and there's no chance for Manchester City to score.
I think you are exaggerating Bayern's chances. Yes, they do have an opportunity to win the Bundesliga, especially after Dortmund drew their last match. But about Bayern being able to beat Manchester City, I wouldn't say that. They need to play 4-0 to knock out the English, which is impossible to do. Especially with Manchester City scoring away, Bayern's chances are zero.