How can I load content only

[MrAbdelrahman10]

I load some data in HandleInertiaRequests middleware like header and check if request is inertia request or not using this code:
$request->header('x-inertia')
And I don't want to load header and footer data every request so i try to load it if request not inertia Ex:

/**
 * Defines the props that are shared by default.
 *
 * @see https://inertiajs.com/shared-data
 * @param  \Illuminate\Http\Request  $request
 * @return array
 */
function share(Request $request): array
{
	$is_inertia = boolval($request->header('x-inertia'));
	// Shared data in all requests.
	$data = [
		'mySettings' => $this->mySettings(),
	];
	if ($is_inertia) {
		// Codes here only work on inertia partial load
	} else {
		// Codes here only work on full page load
		$data['myHeader'] = $this->myHeader();
	}
	return array_merge(parent::share($request), $data);
}

But in this case header comes empty

So my question is: How can I load content only without loading header and footer every request?