Why are my Google Search Console clicks dropping while impressions stay stable?

Community question: See the title above for the specific issue and context.

Practical answer

Compare Search Console Performance by query, page, device and country for matching periods. Check whether average position or click-through rate changed. Look for less compelling titles, competitors and search features that may reduce clicks. Separate branded and non-branded queries and prioritize high-impression pages with measurable CTR declines.