Urgent Blog SEO Recovery

Within the last week several of my highest-value blog articles have tumbled in Google, while the rest of the site holds steady. Only these few pages have been hit, so I suspect a very specific content, technical or algorithmic trigger. I have Search Console and GA4 data ready to share, plus crawl exports from Screaming Frog. What I need now is a sharp audit that pinpoints why these articles slipped and a clear plan to win back their former rankings. Deliverables I expect: • A concise diagnostic report highlighting on-page, technical and off-page factors behind the drop (include any Core Update impacts, link issues, cannibalisation or competing SERP features). • An action plan with prioritized fixes—content rewrites, internal-link improvements, schema adjustments, backlink clean-up, or other tactics you deem necessary. • Implementation of the agreed recommendations and submission of any required reconsideration or index requests. • A two-week monitoring summary showing ranking movement and traffic recovery for the affected URLs. Please ground your analysis in data from tools such as Ahrefs, SEMrush, or similar, and keep all changes fully documented so I can track what was done and when. If you have handled similar selective ranking drops before, that experience will be invaluable.