E-commerce site GA4 setup

Properly set-up analytics to get max business info; especially:
• GA4 service, properly set-up tags,
• triggers, views, reports
• enhanced e-commerce tracking (conversion=sale, favourite, cart [payment, dropped], cancelled orders)
• product categories & tags
• internal search results
• 404 errors
• user-ID
• cross-sell & up-sell
• newsletter subscriptions
• move data from UA to GA4 if possible
Site: debowa.sklep.pl