Unfortunately Celina plays for a club that expects to win trophies. With that pressure, a manager is very unlikely to give you a chance unless you play so well you give him no choice.
I think he could have been given more chances before now. The one chance he got against Chelsea, he was played out of position with too many youngsters in the team. However, I still don't think he should come out witht he words he has done in that interview. It smacks of defeatism and is unlikely to impress any manager.
You could say Sane has been fortunate in that he has played for a club where expectations are much lower and therefore been given a chance, which it seems he has taken.