I want to push and comit some changes in my own repository on github via code with JGit

try {
    Git git = Git.open(new File(pathToFolder));
    git.add().addFilepattern(".").call();
    git.commit().setMessage(commitMessage).call();
        CredentialsProvider credentialsProvider = new UsernamePasswordCredentialsProvider(username,password);
       System.out.println(credentialsProvider);

    git.push().setRemote("https://github.com/my/repo.git").setCredentialsProvider(credentialsProvider).call();
    System.out.println("File pushed successfully!");
} catch (IOException | GitAPIException e) {
    e.printStackTrace();
}

I tried this code but the code keeps giving me an error:

org.eclipse.jgit.api.errors.TransportException: https://github.com/username/repo.git: not authorized

i know that i have the permits to do so becouse is a repository i created and the username and password i utilized were the one from my account

my repository is also public

Thanks