I think iirc that so far we have conceded on avg 8 shots per game yet have conceded 34 goals in the league and sadly that points to just poor goal keeping, especially when you look at Bravo's save percentage which is frankly abysmal.
As a side we defend well up to a point and then its just all or nothing with way too often it being nothing and the ball in the back of the net whilst up the other end, yes we are profligate but teams do make us work much harder for the goal and we have to do the same.
No doubt we have to get in a better keeper than we currently have for the number one spot irrespective of the quality we have in the back three / four positions next year and just as importantly who we have in the middle of the park.
In saying that goals win games and outscoring you opposition on the day is all that matters.
Conceding 34 goals in 30 games doesn't read so bad if we put a penalty past Everton , scored the second against Chelsea at home and taken a different approach to the home games against Stoke , Southampton , Boro etc.
Arsenal have scored one less goal than Chelsea and Manure have conceded as many as they have.