Every month a client asks why GA4 shows organic sessions down 18% while Search Console clicks are roughly flat. The short answer is that they measure different things, but that rarely settles it. GA4 only counts visits where the tag fires, so consent declines, ad blockers and some privacy browsers either drop sessions or push them into referral. Search Console counts Google clicks only, hides rare queries for privacy, and lags a couple of days.
Picture a dental clinic that adds a stricter cookie banner. GSC clicks hold steady, GA4 organic falls, and the drop is mostly lost consent, not lost rankings. So my approach is to use GSC clicks for the Google trend and GA4 conversions for business value, and never put the two raw numbers on one chart. How do you handle it when the client only wants one line?