How to change the blog page title with specific user's only blog posts?
Tryout this one   Reference

class CustomController extends ControllerBase implements ContainerInjectionInterface
  public function getBlockContent() {
    if ($route = $request-&gt;attributes-&gt;get(\Symfony\Cmf\Component\Routing\RouteObjectInterface::ROUTE_OBJECT)) {
      $route-&gt;setDefault('_title', $some_title);
    }
  }


}