How do you switch clash of clans account with somebody?

To switch Clash of Clans accounts with someone, both players need to link their accounts to a separate Supercell ID. Each player should go to the game's settings, tap on "Supercell ID," and either create a new ID or log into an existing one. After linking, the other player can log into their Supercell ID on your device, allowing access to their account. Make sure to confirm the switch and ensure both accounts are backed up before proceeding.