The director of “At War”, and “The Law of the Market”, has used non-professional actors in all of his films. He gives his explanation.
You may find it helpful to have recourse to nonprofessional actors.
My first film was the one that I started. These roles were for a long period of time very small. It was with “the laws of the market” that I incorporated many non-professional actors into what I do. Representatives are a good idea.