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Hi dararede. You can set the number of posts per page in Settings > Reading ? Blog pages show at most __ posts.

To sort posts by title alphabetically, add this function to a child theme functions.php file:

/* sort posts alphabetically by title */
function my_posts_sort( $query ) {
    if ( $query->is_main_query() && ! is_admin() ) {
      $query->set( 'orderby', 'title' );
      $query->set( 'order', 'ASC' );
    }
    return;
}
add_action( 'pre_get_posts', 'my_posts_sort', 1 );

You’re welcome. Glad I could help. If you don’t need any further assistance with this topic please mark it as Resolved. Thanks.