Contact Form submission failing? - php

Question

I'm currently working on my portfolio. As of right now I'm trying to get the contact form to work. So I don't really know php that well and I'm not that good at it, but I've been googling and trying different ideas for myself. As of right now none of them have worked. Below I will attach the contact form html portion as well as the php I have now. Any help would be appreciated greatly
<section id="contact-form">
<!--Contact form section-->
<form method="POST" name="emailForm" action="index.php">
<!--Beginning of form and mail to my email address-->
<div class="contact-left">
<!--Contact info on the left side-->
<h1 class="c-l-heading">Contact</h1>
<!--Major heading-->
<div class="f-name">
<!--Name portion-->
<font>Name</font>
<input type="text" name="name" placeholder="Full Name" required/>
<!--Input field with a placeholder-->
</div>
<div class="f-email">
<!--email portion-->
<font >Email</font>
<input type="email" name="name" placeholder="Example#gmail.com" required/>
<!--Input field with a placeholder-->
</div>
</div>
<div class="contact-right">
<!--Contact info on the right side-->
<div class="message">
<!--Message portion-->
<font >Message</font>
<textarea name="message" rows="5" cols="20" placeholder="Write Message..." required></textarea>
<!--Textbox created-->
</div>
<button>submit</button>
<!--Submit button-->
</div>
</form>
</section>
PHP section now:
<?php
if(!isset($_POST['submit']))
{
echo "Error! You need to submit the form!";
}
//Collection
$name = $_POST['name'];
$visitor_email = $_POST['email'];
$message = $_POST['message'];
//Validation
if(empty($name) || empty($visitor_email))
{
echo "Name and email are required"
exit;
}
$email_from = 'desmondlambkin17#gmail.com';
$email_subject = "dnjls.ca Contact Submission";
$email_body = "Name: $name\n"
"Email address: $visitor_email\n"
"Message: $message";
$to = "desmondlambkin17#gmail.com";
$headers = "From: $email_from";
//Send Email
mail($to, $email_subject, $email_body, $headers);
?>
Currently when I try to submit an email it says This page isn't working, and is currently unable to handle the request