If you meant you wanted the phrase “Retour à l’instinct primaire” presented without any visual blur effect (like in an image or design context), please clarify. Otherwise, the above is the clean, readable text.
(non flouté, non édulcoré, non civilisé) retour à l'instinct primaire non floute
Here’s a clear, unblurred version of your text in French, as requested: If you meant you wanted the phrase “Retour