If you want to change the permalink structure for all Pages (i.e. posts of the `page` type), you can use the `WP_Rewrite::$page_structure` property like so:

```php
add_action( 'init', 'wpse_382911' );
function wpse_382911() {
	global $wp_rewrite;
	$wp_rewrite->page_structure = 'home/%pagename%';
}
```

Don't forget to flush the rewrite rules — just visit the permalink settings admin page (`wp-admin` → Settings → Permalinks).