I never had a German Shepherd Dog that didn't like to play fetch.
Lisl is no different.
The object is to make bringing it back more exciting than chasing it. If you can't do that they will never bring it back. At least not until they learn 'COME'.
You have to make them want to bring it back to you so you (they) can do it again.
Bear, Anna, Molly, Ossie, and The Countess Lisl von Schlaf