For using gmail you will not be allowed to use or own gmail password due to security issues.
Therefore you need to generate 16character(ignore spaces) app password
more info here: https://support.google.com/accounts/answer/185833?hl=en
requirements are that you have

- set-up 2FA (2 factor authentication) for that email account

- the birth date specified in the account is more than 18 years ago.