Your sitemap contains about 1 million URLs. When I look at http://whocalled.us/lookup/2104495665 I see hardly information other than the phone number itself. And Google Adsense advertising. Most of the pages look exactly the same. The ones linked on the homepage contain profanity. The category pages, e.g. http://whocalled.us/lookup/sanantonio are just lists of numbers.
From the outside it looks like a typical content database where every entry is a page with advertising. I can imagine those are no longer in the new Google algorithm's favor. What makes you think your website deserves to be listed on
"I've been making websites since before Google existed, and it feels like my ways are going extinct."
Yes I think creating content databases and giving every piece of information a URL and adding untargeted Adsense is no longer a business. Spammers (not whocalled.us) have been misusing that SEO tactic for too long.
From the outside it looks like a typical content database where every entry is a page with advertising. I can imagine those are no longer in the new Google algorithm's favor. What makes you think your website deserves to be listed on
The usual process to get Google employees to reconsider indexing the website again is called a reconsideration request https://support.google.com/webmasters/answer/35843?hl=en
"I've been making websites since before Google existed, and it feels like my ways are going extinct."
Yes I think creating content databases and giving every piece of information a URL and adding untargeted Adsense is no longer a business. Spammers (not whocalled.us) have been misusing that SEO tactic for too long.