Start with the question
Search Console describes how your website appears in Google Search: impressions, clicks, reported click-through rate and average position. Analytics describes measured activity on your website: sessions, engagement, events and revenue. Start by deciding which part of the journey you need to investigate.
A search click is not a session
The two providers use different definitions, attribution and collection systems. Consent, tracking configuration, timezone and page navigation can change the totals. A click in Search Console should not automatically be treated as one measured session in GA4. Use each source for its own question instead of forcing the numbers to match.
Follow a traffic change through the journey
If search clicks fall, begin with Search Console. Compare pages and queries over equal-length periods. Check whether impressions, average position or CTR changed. Then inspect the related landing-page engagement in Analytics. A content change can affect the kind of visitors you receive as well as the amount of traffic.
Use Rankavon with that distinction in mind
The search overview uses provider search data. The GA4 view uses a separate Analytics property and consent. Keep the selected dates and property context visible when exporting findings. Write down what you observed, the source and the next question, rather than presenting an unsupported explanation as a fact.