Clash of Clan Google log-in fail
Try clearing app data of Clash of Clans from Settings->Apps->Clash of Clans-> Clear data
Then open the game and follow the tutorial until a gear icon appears in the top left corner.  Press the gear icon and select "google sign-in" option from there. Then select your account and you'll be signed in to your account. If you're having difficulty changing accounts, that could be due to network issues , connect to a faster network and try again.