Experience won't always work for you. If experience was always valued then players like Luka Modrić and Toni Kroos would not be sitting on the bench at Real Madrid.
De Gea has been Manchester United's goalkeeper for a long time so we have no doubt that he is a manager with plenty of experience but it remains to be seen how well Bayern Munich will get from him.
In the last season for Manchester United, we saw that he did not perform as expected, that's why Manchester United was forced to end the relationship with him this season.
As Bayan Munich needs a quality goalkeeper, De Gea may be ahead in terms of experience but may fall short in terms of performance.
Modric and Kroos are on the bench not because they can’t play but because they are old and Ancelloti this season is trying to integrate the young players into the team. In most of the matches you will see one of them start and the other comes on second half, this is how to use old players with great experience, exiling them totally from the team is bad because you still need leaders.
The Degea crisis is a bit messy, he wasn’t bad for Manchester United last season because he actually won the premier league golden glove. The problem was Ten Hag preferred a player that plays with his feet and we all know that is one area Degea wasn’t too good at. This same thing was actually one of the reasons both Bayern Munich and Real Madrid didn’t later go ahead to sign him. Manuel Nuer who is very good at his feet is coming back to the team and him and Degea are almost same age, so why have too veterans for one position and their wages are too much. This why Bayern Munich didn’t sign Degea