If you want goals, try using 4-3-3 with everyone on red arrow except the two CB's, my overall record is 15-1-0 using this and my league record is 12-1-0 (top of league & +38 GD) (the draw was my first game I played in this game)
top scorer in league is my Left striker, 2nd top scorer in league is my mid striker and top assister in league and still scored 5 goals this season is my right striker.
my 4th top scorer is my CM and 3 or 4 people in my league use the 4-4-2 classic but they still can't beat me.
if your players still can't score using 4-3-3, get new strikers but the fact that your 2nd top scorer is your defender (LOL) that means something is wrong with your formation.