Divide your site map into categories (optional). If your site map lists more than 100 links, Google may mistake it for spam. It's best to list just the main categories instead, divided by topic, chronology, or some other method that helps your users. For example, wikiHow's site map only lists general categories. Clicking "Aviation" takes you to a smaller "map" of Aviation-related pages.
FamilySearch indexing accesses digital image collections throughout the world. Contractual agreements with record custodians require that these images be protected. A FamilySearch account is the authorization system used to protect them. A FamilySearch account connects you to FamilySearch Family Tree and free records, and allows you to participate with indexing.
The main aim of Googlebot and its crawlers is to not degrade the user experience while visiting any site. To not let these bots affect your website speed, there is functionality where the google crawl rate can be monitored and optimized. This can be done using Google Search Console. Visit the crawl stats and analyze how the bots crawl your site. One can manually set the Google crawl rate and limit the speed as per the need. This will help you ease the issue without overwhelming the server bandwidth.
There are a couple of possible reasons why Google is slow when spidering your site. The first might seem obvious: if Google doesn’t find enough (quality) links pointing to your site, it doesn’t think your site is very important. The other reasons are technical: Google has too much to crawl on your site, your site is too slow, or it’s encountering too many errors.
Please note the difference between “crawling” a backlink and “indexing” a backlink. First google crawls a website with their spider bots and so google knows about the content including your backlinks. At this stage your backlink gets counted and valued. Wheather the site gets indexed or not is decided by google’s AI and depends on various factors like domain authority, content quality, content length any many many more.