SEO Recovery & On-Page Overhaul

My site was hit hard by the latest Google core update and the targeted keywords that once owned page-one spots have slipped away. I need an SEO professional who can move quickly to diagnose what went wrong, fix the underlying issues, and win those rankings back... (Budget: ₹1500 - ₹12500 INR, Jobs: Content Strategy, Copywriting, Google Analytics, SEMrush, SEO, SEO Auditing, SEOMoz)