I don't know how to do a repeater showing different images. Connection to database doesn't seems to works

Simply click on the element within the repeater that you want your images to be shown in and connect that box to the image filed in your dataset.
https://support.wix.com/en/article/working-with-the-connect-repeater-panel
https://support.wix.com/en/article/about-displaying-database-content-in-a-repeater
https://support.wix.com/en/article/working-with-the-connect-panel

Many, many thanks givemeawhisky !