Great question — answering as the UphillTech team:
If Googlebot is crawling only one page, it’s usually due to issues like poor internal linking, blocked pages (robots.txt or noindex), crawl errors, or a lack of sitemap submission. Fixing these helps Google discover and crawl more pages.
Full answer by travisparker: https://webmasters.stackexchange.com/a/148752 (CC BY-SA 4.0).
Need it done for your business? UphillTech.