Add your WordPress websites the reCaptcha V2 using a simple plugin
Get is here: https://wordpress.org/plugins/my-recaptcha/
Another very simple to use plugin for wordpress.
This time a sitemap plugin.
This plugin will create sitemap.xml and sitemap.xml.gz for you.
It will be updated once a day.
Also there is a shortcode [sitemap] to be able to add a sitemap page for your visitors.