I have build an Instagram clone using Firebase. Which has all features like Instagram. Having offline capability with data that had already loaded and you can see it later when you go offline.

A full-stack chat application built with React, Convex Auth, and Convex DB. Users can sign up, upload photos, chat in personal and group settings, edit messages, and express themselves with a wide selection of emojis. Implements complete CRUD operations. Emojis are integrated into the chat experience.