Optimized Amazon-Flipkart-Meesho Listings

I need fewer than 50 products uploaded and fully optimized across Amazon, Flipkart, and Meesho. All images and basic descriptions are already prepared; what I am missing is the expert touch that boosts search visibility and sales... (Budget: ₹1500 - ₹12500 INR, Jobs: Amazon, Content Writing, Digital Marketing, Internet Marketing, Keyword Research, Market Research, Product Descriptions, Product Marketing, SEO, SEO Writing)