I can't push changes?

[LordKallig]

I'm sure my password is correct, but it still won't let me.

[arafajs]

• Make sure you have write access to the repository you are trying to push to.
• Make sure the branch you are trying to push to is up-to-date with the remote branch.
• Make sure you are using the correct git command to push the changes.

[Arkenstine]

Make sure you have access to the repository.

Also, are you trying to push from the terminal? You need a personal access token not your password.
https://docs.github.com/en/authentication/keeping-your-account-and-data-secure/managing-your-personal-access-tokens