Good you won.
The striker not showing much I would not worry about to much, so much of this game depends on who's turn it is to score, besides he is still keeping two players busy where ever he is.
You may get more crosses with long passing, problem is you tend to lose a little bit more possession, from my experience around 2% max.
From what you say about changing your attack through the centre if you were using short passing your MC's are feeding the AM's and they were going for goal, again possible mixed or long passing may change that.
With any flank formation your attacks will always go through the wings, your centre is there to break play up and command the CM area allowing your AM's to do the damage.
So much of this game with orders is trial and error, not good in the latter stages of comps but ..... better to try and fail than not try at all.
In my experience the game has a habit of giving strikers more goals in one comp than the others, last season I had three, all three had good records in one comp and indifferent in the others, I don't know if this is coincidence or the engines way to try and make you play one/two strikers in the same comp all the time, my theory is it is, this way it makes it easier to weaken your squad through cards building up in the same comp, check your squad stats and look for any clues.