生成电子邮件PHP

I've spent some time trying to figure out a way to allow users to contact me via my landing page. Being fairly new to programming and having used snippets of code from multiple sources I am at my wits end and would love some help. My troubleshooting has centered around:

I. Did I setup my local server correctly?

And if so, am I missing a package on WAMP and/or mail server? I referenced php mail setup in xampp this post.

II. Is my HTML code faulty?

      <div class="container-contact100-form-btn">
        <button type="submit" value="Send" class="contact100-form-btn">
           Send Message
        </button>
      </div>

III. Am I needing to edit/adjust my JS file to accommodate the additional functionality?

function showValidate(input) {
    var thisAlert = $(input).parent();

    $(thisAlert).addClass('alert-validate');

    $(thisAlert).append('<span class="btn-hide-validate">&#xf136;</span>')
    $('.btn-hide-validate').each(function(){
        $(this).on('click',function(){
           hideValidate(this);
        });
    });
}

function hideValidate(input) {
    var thisAlert = $(input).parent();
    $(thisAlert).removeClass('alert-validate');
    $(thisAlert).find('.btn-hide-validate').remove();
}

IV. Is something missing from the PHP code?

<?php
if( isset($_POST['Send Message'])) 

$name = $_POST['name'];
$email = $_POST['email'];
$bar = $_POST['bar'];
$message = $_POST['message'];

$email_from = $email;
$email_subject = "New Contact Us Email";
$email_body = "You have received a new message from the user $name.
".
    "Here's the message: 
 $message".

$to = 'I had my email here';

mail($to, $email_subject, $email_body)

?>

I really would appreciate any help and/or links that might lead me down the right path. Thank you!