I still don't understand one thing. Why did Nagelsmann wanted to manage a national team already now? I mean he is a really young manager after all. He was climbing the steps really quick in his career as the last club he managed was Bayern Munich as you know. 
After that I really expected him to continue managing big clubs like that.
I think national team jobs are a better fit for managers with big careers at a little old age minimum too. Because you are like a little active than being retired while managing a national team.
You are rarely playing games.
Usually very good coaches are at big clubs but it looks like Julian Nagelsmann chose the challenge of managing Germany. Moreover, some time ago he was offered many clubs but unfortunately he didn't want to take the long journey to be able to build the club from scratch so his choice was quite right to handle Germany for now. After that I really expected him to continue managing big clubs like that.I think national team jobs are a better fit for managers with big careers at a little old age minimum too. Because you are like a little active than being retired while managing a national team.
You are rarely playing games.It was also rumored that Julian Nagelsmann would return to Bayern Munich, but it seems he is still annoyed with the decision of the Bayern Munich sporting director who took a unilateral decision to fire him and of course as a coach he has the self-respect to think about this step. His contract with Germany will still run until the 2026 World Cup and after that maybe we can see him come to a big club again to fulfill the challenge that was postponed.