Redirect All 404 Pages

I think this can show you how that can be done:
https://www.internetmarketingninjas.com/blog/search-engine-optimization/301-redirects/

You can use plugins, if you don’t want to do it manually. You can use any SEO plugin, which supports the redirect function.

You can use WordPress by Yoast.

thanks

I almost found the solution. But I need to get the last part of the url of the current page in wordpress.
Example:
Getting “the-wrong-url” when the url is “www.example.org/the-wrong-url”

Fortunately found the solution. Add the following code to the very top position in your theme’s 404 page:

<?php
global $wp;
$curdiris = $_SERVER['REQUEST_URI'];
header("Location: https://sub.example.org$curdiris", true, 301);
exit();
?>