SMTP Code Problem

When I try to get my contact form to send it just loads forever and does not send. I know my hosting server's smtp works as Ive sent test emails through it so that shouldnt be the problem (Im using Cloudways if that matters.)

I have the code

$mail->IsSMTP();
$mail->Host = "mail.privateemail.com";
$mail->SMTPDebug = 0;
$mail->SMTPAuth = true;
$mail->Port = 587;
$mail->Username = "fergus@insiteable.com";
$mail->Password = "*********";

typed in but it still does not send. Any help would be greatly appreciated.

Upon adding this code, the error code I get is insiteable.com is currently unable to handle this request. HTTP ERROR 500. Any advice on what may be the problem?

Actually the error is

Warning: Undefined variable $mail in /home/620574.cloudwaysapps.com/nfupeaxybg/public_html/include/form.php on line 61

Fatal error: Uncaught Error: Call to a member function IsSMTP() on null in /home/620574.cloudwaysapps.com/nfupeaxybg/public_html/include/form.php:61 Stack trace: #0 {main} thrown in /home/620574.cloudwaysapps.com/nfupeaxybg/public_html/include/form.php on line 61

I have solved the problem by adding

$mail = new PHPMailer();

to the code. I really think you should put that code above in your form support section as it seems to be necessary to make the $mail function worth.

Thank you so much for your help and continued support.

My last problem I have is that the mail now will send but still on the page it just keeps loading instead of giving the typical we received your message response. Any idea why this is?

Disregard that haha I finally got it to work. I had my debug set to 3 and I put it back to 0 and now everything works flawlessly. Sorry for spamming this ticket with questions but I have finally gotten it all to work.

Again, thank you so much for your help and continued support, Ill make sure to give 5 stars on themeforest!