Best Simple Spam Blocker

I like the plugin “wp zero spam”.

Try this plugin https://www.ads-software.com/plugins/zero-spam/screenshots/

For remove website field:

Put the following in your functions.php at the end of file

function alter_comment_form_fields($fields){
    $fields['url'] = '';  //removes website field

    return $fields;
}

add_filter('comment_form_default_fields','alter_comment_form_fields');

I use Anti-spam and it’s great.