I really think you should try use 3CB instead of that put blue arrows on RB and LB if you gonna play that formation it will give you more balance in defence but it's just my opinion .
I like to play with 4 on the back and if I play 3 I use 3CB

but your team looks alright maybe try a game with no arrows just blue on your 3 defenders
For your next game you should use more MC or his midfield will overrun yours