To add a bit more to this, here is a screenshot of an Integromat flow hat uploads all attachments submitted through an image question with multiline appearance. Note that an Iterator module is used to loop through all attachments sent, so they can be uploaded to OneDrive.
The iterator is configured to target the Attachment URL array:
When downloading the attachment using the HTTP Get a file operation, do not forget adding the token a the end of the URL if you are working with a private feature layer.
Another useful module in Integromat is the Array Aggregator. This blog describes how it works: https://www.integromat.com/en/blog/how-to-use-iterator-array-aggregator-in-integromat-scenarios The array aggregator is useful, for example, if you want to add all attachments into a ZIP file.
Generally speaking, I would avoid if at all possible adding a repeat just so people can send more than one image. The multiline appearance gives you much more control and results in data that can be more easily used from ArcGIS. Additional details about this here: https://community.esri.com/t5/arcgis-survey123-blog/survey123-tricks-of-the-trade-photos/ba-p/897907