P2P E-Commerce App Development

I need a peer-to-peer e-commerce app built where users can buy and sell physical goods. The app will not be limited to a specific category, meaning it will handle multiple types of goods across various categories. One essential feature for the app is the capability to include multiple product images and video support to enhance listings. If you have experience developing feature-rich e-commerce applications, I'd love to hear your ideas and approaches for building this platform.