I have been looking closely at R or L foot to see if there is a reason for poor performances from my players

I get it if you have a AMC/AMR who is left footed and may prefer the Central Role, but what if he is only a AMR MR or DR?

If they perform badly, should I try them in a Left sided Role even if Nordeus tells me my player is out of position??

has anyone had any luck trying this?