Hello,
Thank you for reaching out to us regarding the Instagram feed images. The behavior you are experiencing, where the images are downloaded and added to your media library, is required for the functionality of displaying the Instagram feed on your site. Unfortunately, this cannot be disabled, as WordPress needs to store the images in order to properly display them on your website. Please note that displaying images directly from Instagram is not possible due to Instagram’s API restrictions.
If you have any more questions or need further assistance, feel free to let us know.
Regards