The Gentleman from Epsom
Le Gentleman d'Epsom (original)
The story takes place in the racecourses around Paris. A so-called major sells his tips to naive characters.
Starring Jean Gabin, Louis de Funès, Madeleine Robinson, Jean Lefebvre, Paul Frankeur, Frank Villard, Jacques Marin, Jean Martinelli, Joëlle Bernard, Aline Bertrand
It's a crime and comedy movie, and has a rating of 6.1 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from Indonesia.