In Netherlands church attendance has gone down, but it should still be relatively easy to find someone who goes to church. The attendance isn’t divided equally across the Netherlands though. Meaning, it is way higher in small villages than in a city. Which is sometimes easy to see by seeing what political party people have voted for.
For NL apparently 12% regularly goes to church. And 43% is “aligned” with a church, don’t know what they exactly meant. See cbs.nl/…/religieuze-betrokkenheid-in-nederland for a Dutch source.