Besides administrator show only the current user media files

show_current_user_attachments.php

<?php

//Besides administrator show only the current user media files
function show_current_user_attachments( $query ) {
    if ( ! current_user_can('administrator') ) {
        $user_id = get_current_user_id();
        if ( $user_id ) {
            $query['author'] = $user_id;
        }
    }

    return $query;
}
add_filter( 'ajax_query_attachments_args', 'show_current_user_attachments' );