Surcos
A farm family moves into a city maybe at the end of the Spanish Civil War. They move in with the sister of the farmers wife. In the city everything is illegal or immoral or both.
Starring Luis Peña, María Asquerino, Francisco Arenzana, Marisa de Leza, Ricardo Lucía, José Prada, Félix Dafauce, María Francés, Carmen Sánchez, Montserrat Carulla
Watch "Surcos" on FlixOlè released in 1951. It's a drama and family movie, and has a rating of 7.6 out of 10 from Imdb which is usually fine for this kind of movie.