Meta descriptions don't directly affect rankings, but writing them yourself, page by page, still meaningfully affects your click-through rate from search results.
Write a Real, Specific Promise for Each Page
A description that clearly states what the reader will get outperforms a vague summary of the page's general topic.
Stay Within a Practical Length
Descriptions that run too long get truncated, so keep the core message within a length that will display fully.
Skip Pages With Genuinely Low Priority
Not every page needs equal attention; focus your writing time on pages that matter most to your traffic and goals.
Next step: Use the SEO Audit to see which of your pages are missing descriptions entirely, or duplicating one across several.