I don't know why Bastos didn't start. Delgado has looked weak and I don't think so much of Ederson.
But this Lyon side is so disciplined in their approach. They're very patient and play well defensively as a team. Even despite having a few absences and a youngster like Gonalons in the side, they still keep their shape even when under pressure.
Bayern got a couple good opportunities that they should have converted, but they did not. That's what they should complain about, their own finishing.