Search Console samples and aggregates. Your access log records every single request, with a status code and a timestamp. Here is how to verify a crawler is really Googlebot, the four awk one-liners worth memorizing, and what the numbers usually reveal.
Five filters with four options each is 1,024 combinations, and a crawler will try to find all of them. Here is how faceted navigation turns into an infinite space, why rel=next/prev is not the fix, and the three patterns that keep pagination crawlable without the explosion.