Ajax comment form submit on frontpage alerts success but no insertion

It took a while, but this works (a comment is created, albeit with still some missing values, but fixing that part is easy) Biggest changes: For some reason an ‘echo’ in functions.php was important. Also, I changed the ‘action’ in ajaxtry2.js under data:

HTML (values are fictional)

    <form id="commentform" class="commentform">
    <label for="comment"></label>
    <textarea id="comment" class="comment" name="comment"></textarea>
    <input name="comment_post_ID" value="1" id="comment_post_ID" class="comment_post_ID" type="hidden"/>
    <input name="comment_parent" id="comment_parent" class="comment_parent" value="1" type="hidden"/>

    <input type="submit"> 
    </form>

ajaxtry2.JS

    jQuery(document).ready(function(e) {

    e('.commentform').on('submit', (ajaxSubmit));

     function ajaxSubmit() {
     var comment_parent=e(".comment_parent").val();
     var comment_post_ID=e(".comment_post_ID").val();
     var comment=e(".comment").val();
     var BookingForm = jQuery(this).serialize();

jQuery.ajax({
  type:    'POST',
  url:     commentsent.ajaxurl,
  data:    {BookingForm:BookingForm,action:'trytosenditr'},
  success:function(msg){
  alert(msg +comment);
  }
});
return false;
  }});

functions.php

    function all_the_scripts2() {        
    wp_enqueue_script( 'ajaxtry2', get_template_directory_uri() . '/JS/ajaxtry2.js', '', array('jquery'), false );
    wp_localize_script( 'ajaxtry2', 'commentsent', array( 'ajaxurl' => admin_url( 'admin-ajax.php' )));
    }
     add_action( 'wp_enqueue_scripts', 'all_the_scripts2' );

    function trytosendit() {
    global $wpdb;   
    parse_str($_POST["BookingForm"], $output);
    $comment_parent = $output['comment_parent'];
    $comment_post_ID = $output['comment_post_ID'];
    $comment = $output['comment'];
    $time = current_time('mysql');
    $current_user = wp_get_current_user();

    $data = array(
    'comment_post_ID' => $comment_post_ID,
    'comment_content' => $comment,
    'comment_parent' => $comment_parent,
    'comment_date' => $time,
    'comment_approved' => 0,
    'user_id' => $current_user->ID,
    );

    wp_insert_comment($data);
    echo 'hello';
    wp_die();
    }

Big fan of this Website, it has helped me a lot many times over!