cannot use the password and username for linking to remote repository

https://reactgo.com/github-password-authentication-removed/

adding existing local project directory to remote github page

https://docs.github.com/en/github/importing-your-projects-to-github/importing-source-code-to-github/adding-an-existing-project-to-github-using-the-command-line

push the updated files

https://segmentfault.com/a/1190000038643126