Well you know what you could do, if you haven’t already? Go and do some FIFA coaching badges and you might then be able to answer some of those questions you have. I’m not having a dig at you but perhaps it’s an avenue you should explore. It will give you a far greater understanding of how and why coaches of all clubs, not just Everton, are employing their team tactics/ distances they want players apart/ who sits when others break forward/ the shape with and without the ball etc.
None of our players, outside of DCL (injured for most of the season) Simms (on loan for half the season) and Maupey (a 3ft second striker playing as a lone striker) have ever known how to score goals consistently throughout their careers either. Players were getting in to positions to score and fluffing their lines, you can lead a horse to water etc.
Our best chance to score is through set pieces because we have players who are good in the air but even then that is risky committing too many forward (goal conceded at Mordor).
This manager hasn’t been here long, he’s getting these players playing far better than the previous manager did and rightly realises that if you keep a clean sheet you only need 1 goal to win a game and the longer you keep yourself in a game the better chance you have of getting points, especially with this lot who have proved how abysmal they are season, after season, after season.