MIDV (Romanian Team)

[Accyrover]

As for the squad.
Three additions should be enough along with two additional changes, I would try to change: ML/MR for ML/AML & MR/AMR
The additions would be: Striker, ML/DML & MR/DMR
Those changes would allow you to play all formations known to man and counter them all also.
Anything left an additional DCDL/DR with SA Defensive wall, SA also would be a bonus on all the above players. Corner Kick, Free kick, One v One, Play maker.

What formations did the 3-1-4-1-1 get beat with?.

Three defenders is OK against some formations but cautious against the number of strikers you play it against. I only use 3 wide rarely against a single striker and my DC has to be much better even then.