Hi Omri,
The MEDIA_BUNDLE asset type is for uploading the HTML5 assets as a zip file. If you're using the ad_group_ad_asset_view to pull these details, this will return the details of the specific media bundle. This will not return the image/video details within this bundle. For the other image/video assets, you may use the asset.image_asset.full_size.url or the media_file.source_url which will return the URL for these assets. Please let me know if you have any other questions.
Thanks,
Bharani, Google Ads API Team