What is wrong about my formation?

[Sketchi]

Hey,
I trief a new formation in the last two matches but i lost both and i have no idea why.

My formation:
ST
AML-MC-MC-AMR
DMC
DL-DC-DC-DR
GK

4/5 star players

Mentality: attacking
Passing: both flanks
Pressing: whole pitch
Offside trap [x]

The rest is standard setting

My opponentd had a 3-4-3 formation

Any suggestions? What should i change?

Thanks for the help

[Wilson Loo]

is this 451v style? this is a strong formation but u got something wrong on your setting , passing mixed no offside trap and tick force counter attack , you dont have to put whole pitch pressing (own half when you taking the lead ) ( whole pitch if you want to score fast)
marking zonal .

[Sketchi]

Offensive arrows on DL/R and AML/R

And my opponents had 3 star
players

[Sketchi]

Okay and should i keep the arrows like that?

[gohannie]

4-5-1 v is a balanced one, so no arrows needed except one on your striker to ensure he has more one on one chances and always up front, in case ya lossing, red on your wide player (turn to flank attack and whole pitch), other wise, mixed style, own half, normal or defende with counter attack, if playing attacking remove the counter one. Againts stronger or equal 3-4-3, ya better play with normal, mixed, own half with counter, red arrow on st only.