view and terminate

On CI3 if I want to view pages :

PHP Code:

$this->load->view('paket/list.min.html'); 


That automatically exit. So I do check like this

PHP Code:

if( ! $check ){
     $this->load->view('page_not_found.min.html');
}
// process something
$this->load->view('page_success'); 


And when check fails, then page_success wont executed.
How to do that in CI4? Did it safe to just call exit() ?