@dan_bre_1988 it seems like you have an idea of how you want to play. What I would suggest is maybe watching highlights on comprehensive and look at your CM with the Get further forward PI (does he get up the pitch enough or do you need something more aggressive in there movement). See if your wide players are doing what you want them to do? Look where your attacks break down if they do at all or do you not create enough? You could maybe increase mentality to create more risk. As much as you don't want to get caught out, you need to be aware every tactic has a weakness even the most thought out ones. It's all risk, reward and experimentation.
For what you want to do with possession a striker on DLF is a really good choice as a lone striker but you need players to go beyond him he's going to hold the ball up and try to bring people in to play but if no one is there he's going to lose the ball, shoot from distance or go backwards. I'd maybe play around with only having either play out of defence or work ball in to box rather than both. I used to always have both of these selected but I've recently removed one as both together seems to lead to meaningless possession.