Fashion App Push Notifications Strategy

I run a mobile-commerce app that stocks a curated mix of Western fashion, trending Korean styles, and bestselling cosmetics. Sales are steady, but repeat engagement is nowhere near where it could be, so... (Budget: ₹12500 - ₹37500 INR, Jobs: A/B Testing, Analytics, Content Writing, Copywriting, Data Analysis, Digital Marketing, Marketing Strategy, Mobile App Development, Social Media Copy)