Can i play the single player missions in gta online?

Grand Theft Auto Online is a separate, persistent multiplayer experience that was released alongside GTA V. It offers its own set of missions, heists, and story content designed for up to 30 players, but none of those missions are the single‑player story missions found in the main game. To play the original single‑player narrative, you must switch to the single‑player mode of GTA V, which is a different game instance. The online mode cannot load or replay the single‑player missions, and the two modes are mutually exclusive in terms of content and progression.