Googlebot doesn’t scroll, doesn’t click, doesn’t interact with the webpage! If your content needs user interaction to load, Googlebot doesn’t read that, unless the content is in the Source HTML or Rendered HTML.
How do you know if it’s Googlebot?
Check the IP ranges that Googlebot uses to crawl websites: https://developers.google.com/static/search/apis/ipranges/googlebot.json
Run a reverse DNS lookup for the IP Address and check if the domain name contains Googlebot to verify if it’s real Googlebot! You can do it on Terminal or Command Line Tool.
host 66.249.87.0/27