Sometimes you may need to change default author url to different page. Here I am sharing you the code which you can use without modifying the theme file.
function modify_author_posts_url( $author_posts_url, $author_id ) {
// modify the URL here
$author_posts_url = 'https://www.example.com/';
return $author_posts_url;
}
add_filter( 'author_link', 'modify_author_posts_url', 10, 2 );
You can use Code Snippet plugins to use the code, here is the screenshot about how you can use the code.
All About Basic 