Github how to cancel my github account

Describes the cause and action for error messages.

Error Message(English)：
how to cancel my github account

Resolution

Deleting a repository - GitHub Help
https://help.github.com/en/articles/deleting-a-repository

Canceling a GitHub Marketplace app - GitHub Help
https://help.github.com/en/articles/canceling-a-github-marketplace-app

Downgrading your GitHub billing plan - GitHub Help
https://help.github.com/en/articles/downgrading-your-github-billing-plan

Delete forked repo from GitHub - Stack Overflow
https://stackoverflow.com/questions/11302639/delete-forked-repo-from-github

How to delete remote repository on github?
https://stackoverflow.com/questions/23914342/how-to-delete-remote-repository-on-github

How to discard local changes and pull latest from GitHub ...
https://stackoverflow.com/questions/38776517/how-to-discard-local-changes-and-pull-latest-from-githu・・・

how to un fork the github repository?
https://stackoverflow.com/questions/38831301/how-to-un-fork-the-github-repository

How can I remove a commit on GitHub?
https://stackoverflow.com/questions/448919/how-can-i-remove-a-commit-on-github

Githubアカウントの削除方法 | shimidai2100
https://shimi-dai.com/delete-github-account/