Redirect urls with www from external domain

What browser are you using? The input fields in that screenshot are huge.

Is the www domain also pointed to the same server? Also, you can see a difference in the source URL – one has the correct ^/index.php/about, while the other has an incorrect www.example.com/index.php/about (which makes the URL www.example.com/www.example.com/index.php/about

I have chrome and www domain is pointed aswell.
Yes, I know about source URL difference, but how can I use ^/index.php/about source with www?

https://www.example.com/index.php/about doing nothing redirect, only 404.

As I said, your second screenshot is wrong – you have the domain in the source URL. Make the second screenshot look like the first, and change the server to https://www.example.com.

Well,

only change server, it works.

And when I need redirect all pages like:
https://www.example.com/index.php/a
https://www.example.com/index.php/b
https://www.example.com/index.php/c

what can I as source?
When I add:
^/index.php/*
So not work.

^/index.php/* is not a regular expression. See https://redirection.me/support/redirect-regular-expressions/ for details about regular expressions.

Point:
^/index.php/.*
or
^/index.php/(.*)
Thank You for assistence. ??

In this instance it doesn’t matter which one.