Shopify GA4 Tag Setup

I need my Shopify store fully wired up to Google Analytics 4 through Google Tag Manager. The goal is to capture everything—general visits and page views, each step of the checkout funnel, and all ad-driven conversions—so reports in GA4 line up perfectly with what really happens on-site... (Budget: ₹600 - ₹1500 INR, Jobs: Conversion Rate Optimization, Data Analytics, Data Visualization, Digital Marketing, eCommerce, SEO, Shopify, Web Development)