and Sadio Mane can not handle the pressure that Lewandowski has established,
Mane and Lewandowski are two completely different footballers, i don't think Sadio Mane is a striker, yeah he can play in the number 9 position, but he feels more comfortable coming from the flanks like he did in Liverpool, Lewandoski is a number 9, a player that was created to score goals, just look at his stats, there is no comparison between Lewandowski and Sadio Mane when it comes to scoring goals, so it is not about Mane not being able to handle any pressure, you shouldn't expect him to recreate Lewandowski's numbers in front of goal, he has his other stronger areas.
Even though they are different, I believe that their strength and skill in controlling the ball are the same and of course Mane some time ago was also famous for often giving surprises when competing even though his position was still very new at Bayern Munich I believe Mane will be easy to adapt because of the nature of Mane who is easy to joke and not too stiff to make everything will run smoothly and can be a new start to score a lot of goals in bayern munich.