Unable to gather Image URL from Custom Post Type’s; Custom Meta Field

If you want the image URL you should use wp_get_attachment_image_url(), not wp_get_attachment_image():

$background_image_id    = get_post_meta(get_the_ID(), 'your_background_image_id', true);
$background_image       = wp_get_attachment_image_url( $background_image_id, 'full' );
$profile_image_id       = get_post_meta(get_the_ID(), 'your_profile_picture_id', true);
$profile_image          = wp_get_attachment_image_url( $profile_image_id, 'full' ); ?>

wp_get_attachment_image() returns a full HTML <img> tag, but background images are just a URL.

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