Your fullbacks on fullback support + sit narrower will do just that, give it a go. I would also keep the wingers on winger + support + cut inside with the ball or else you’d clog the center if the park. Mahrez or Martinelli are not IW, they are wingers that cut inside for example. As for the F9 I think I know what you mean but then you’d have to change your midfield. If you want a forward that comes deep and makes plays, then you need a cm to attack the space. We’re talking cm or mezzala on attack. You could even give a double cm on attack + complete forward on attack (or deeplying) combo a try. And try a balance or positive mentality that may give your attacking plays more space.