I am trying to write a custom redirect rule to open a download matching pages.

Example: postname.example.com/download
Example2: postname.es.example.com/download

I am using the following code in my functions.php:

add_rewrite_rule('^([^/]+)\.example\.com/download?$','index.php?pagename=download&postnames=$matches[1]','top');
add_rewrite_rule('^([^/]+)\es.example\.com/download?$','index.php?language=es&pagename=download&postnames=$matches[1]','top');

I’ve also added wildcard forwarding for all subdomains from my DNS and verified.
but these rule not work can please help me out how open my download page like this