For low-volume sites, Google Search Console’s manual request tool is standard....

https://tango-wiki.win/index.php/The_%22Why_Did_My_Page_Get_Dropped%3F%22_Post-Mortem

For low-volume sites, Google Search Console’s manual request tool is standard. If you’re pushing massive link campaigns or programmatic pages, tools like Indexification—which offers 60 credits for $29—are practical for signaling