How do i switch from gta online to story mode?

The only verified information we have is a description of Grand Theft Auto Online as an online multiplayer component of Grand Theft Auto V, its release dates, and the open‑world setting in San Andreas. No source in the evidence explains how, if at all, a player can return to the single‑player Story Mode from the online component. Consequently, based on the available data we cannot provide a method for switching modes. If you need guidance on this topic, you may want to consult official Rockstar support channels or community forums that discuss gameplay mechanics.