Gmail email addresses (or google workspace – business ones) can be used to use the Google Cloud Platform cloud services as well as Google Firebase ones.
Prerequisites: Create a new account
First step is setting up your profile consisting of: first name, last name, username, password and password confirmation.

Clicking next gets us to more profile information. We totally recommend inserting your phone number and recovery email address. These can be used in case you forget the password.

Next you will be asked to choose personalisation settings. For ease of setup, choose the express one

Next you are asked to confirm the personalisation settings. We recommend reading them and upon acceptance to confirm them. Next step you have to accept the Privacy & Policy terms.
That’s it, congratulations! Your account was created.

That’s it! You can now create your firebase project!