Crawl-delay is declared 1 time and Google ignores it
Crawl-delay was never part of the standard. Google has never supported it; Bing and Yandex do.
Consequence. Any rate limit intended for Googlebot is not being applied. If the goal was to reduce load from Google specifically, it is not working.
If that is not intended. Set the crawl rate for Google in Search Console instead. Keep the directive if the limit is meant for Bing or Yandex, which do honour it.
Crawl-delay: 5L27