To use Gmail, you have to make an account on it and set a strong password. You can use one account on multiple devices and you can also create more than one account. But, make sure you can only use one account at a time. Most of the users prefer to save password for their convenience and forget it. If you
forgot Gmail password, then simply opt Forgot Password to get it back or contact us to know more.
https://www.monktech.us/Gmail-password-recovery-reset.html