In order to ensure that your voice sound more natural and with little robotic breaths, make sure that the dataset for your trained voice has a wide variety of tones and is not monotone.
Additionally:
If you’re using the Text-to-Speech function, try multiple conversions to experiment with different inflections.
If you’re looking to create the most natural speech outputs, try our Voice-to-Voice conversion using your own voice to narrow down the voiceline you want.
Finally, make sure that your model is a speaking-specialized voice model and not a singing model.