Ok again thanks for all your suggestions. After doing more research on the forum and trying to find old results against the formation in questions. Also my opponent has lost only 1 match in the league and he lost from a weak opponent who used 4-1-2-1-2 Narrow diamond. So going by his recent loss to 4-1-2-1-2 Narrow diamond formation, i believe the game engine could be in favor of this. So my plan for tonight is below. If you think I can improve on any part please let me know. Thanks

4-1-2-1-2 Narrow diamond :

--ST---ST--
----AMC----
---MC--MC--
----DMC----
DL-DC-DC-DR

Mentality : Defensive
Focus Passing : Through the middle
Pressing : Own Half
Tackling : Normal
Passing Style : Mixed
Counter : ON
Offside : OFF


or

3N-2DML/DMR-4-1

-----ST----
-----------
ML-MC-MC-MR
DML------DMR
--DC-DC-DC--

Blue arrows on all DC and DML/DMR
Red arrow on ML/MR/ST

team mentality = Defensive
focus passing = Down both flanks
pressing style = half
tackling style = Hard
passing style = mixed
marking style = Zonal
Counter attack = yes
offside trap = no

and when things go wrong


3-4-3 flat with

--ST-ST-ST--
------------
--MC-MC-MC--
----DMC----
DL-DC-DC-DR

team mentality = Normal
focus passing = mixed
pressing style = half
tackling style = Hard
passing style = mixed
marking style = Zonal
Counter attack = yes
offside trap = no