You really dont understand Football do you.?
When you play out wide,its a given that at some stage in the match you will lose the ball.thats basic.its part of a wingers locker.its all in the mix.
Playing away from home ,in Germany, switching wings at the managers direction,keeping any eye on the tatical plan.yes Sterling could be forgiven for losing the ball a few times. Like Foden.This is the Champions League.classy hard adroit german full backs...playing on their own turf.Losing the ball a fewtimes is gonna be expected from any winger,in those circumstances.
Imo.
Overall,Sterling played his part in a Fantastic team performance.