Now now, Lindelof is fine, posessing a good all-around qualities needed for and expected from a modern type of CB.
He's still adapting, as we can see his improvements along this season.
(Horrible pre-season and early season. Then average in many games, with the odd some good game. Then a lot more consistent fair enough rating game. Recent 2-3 games, made almost costly mistakes, but fine with the rest of the minutes, and actually showed frustrations for it which is good, and did one thing missing from our players, yelling everyone to be alert in that Chelsea game since final whistle have not yet been blown).
Just need to start be more consistent improving his overall form, and cut out those silly mistakes, and be a lot more ruthless.