Codeigniter 4th level route not working

Put it this way:

$route['admin/news/delete/(:any)'] = 'admin_news/delete/$1';
$route['admin/news/edit/(:any)'] = 'admin_news/edit/$1';
$route['admin/news/create'] = 'admin_news/create';
$route['admin/news/(:any)'] = 'admin_news/view/$1';
$route['admin/news'] = 'admin_news/index';

Remember:

Routes will run in the order they are defined. Higher routes will always take precedence over lower ones.

Docs.