How to display a "visitor" flow and a "User" flow depending on whether the user is logged in or not?

We have created 2 conversion flows:

1 personalized flow named "Visitors", for users not connected to our application, whose email address is unknown. This flow has as Rules "Visitors". And an other personalized flow, named "Users" for connected users, whose email address is known. This flow has as rules "Users". Unfortunately, whether on our Android or iOS application, the "visitor" flow never appears. Instead, the "User" flow is always displayed, although the user is not logged in.

How do I get the "visitor" flow to be displayed when the user is not logged in?

Thank you