Hi Samuel,
This set of check boxes you mention you want to iterate over, are these objects? If so you can simply create a list view that only displays the objects for which the value is false. This can be done using Xpath as data source, or a microflow in which you filter your objects. In the list view, just have a text element that displays the desired label and you are done!
If it's simply booleans on a single entity, you can set the visibility on the second page based on expressions, only displaying your text element or field when the boolean is false.
Let me know if I understood you case properly or if this doesn’t solve your question, either way good luck!