[Fm23 ps5 gameplay issue]

I guess it depends on your standing in the club. did you just start there? what is your reputation? This should become available after some time later in the career when your standing within the club is big enough and your relationship with the chairman is good.

[Germany youth intake !]

This is still not fixed. It would be nice to have this fixed some day though. 

[No Champions League after winning German Cup]

The winner of the DFB Pokal does NOT qualify for the Champions League.