Install honeypot spam prevention to your wordpress to reduce spam comments http://www.wppicker.com/how-to-install-honeypot-spam-blocking-for-wordpress/

add-honeypot-wordpress-comment-form.php

/*
This code adds a hidden text field to the comment form to trap spam bots. 
Add these code snippet at the end of functions.php.
No other setting needed.
*/

//Add an invisible field to comment form box
add_action('comment_form', 'wpp_add_honeypot');
function wpp_add_honeypot($postID) {
	
    //Adding a invisible textarea with name igotyoubot for spambots, visitors won't see this.
	echo '<p style="display:none">';
	echo '<textarea name="igotyoubot" cols="100%" rows="10" autocomplete="off"> </textarea>';
	echo '<label  for="igotyoubot">' . __("I don't like an input here. You Must Leave This Empty") . '</label>';	
	echo '</p>';
	
}

//Check if comment is a spam
add_filter('pre_comment_approved', 'wpp_detect_honeypot');
function wpp_detect_honeypot($comment_status) {

   if (!empty($_POST['igotyoubot'])) { 	// Mark as spam if bot filled out the hidden textarea
        $comment_status = 'spam';
    }
	return $comment_status;
}

Hello @vijujohns
does this honeypot for comments still work on WP5.9?
Thanks and greetings,
Denis