WordPress customize upload foleder

functions.php

<?php
/*
WordPress customize upload foleder path
Create a Directory within Uploads folder
*/
function mw_activate() {
    
    $upload = wp_upload_dir();
    $upload_dir = $upload['basedir'];
    $upload_dir = $upload_dir . '/my_plugin_files';
    if (! is_dir($upload_dir)) {
       mkdir( $upload_dir, 0700 );
    }
}
 
register_activation_hook( __FILE__, 'mw_activate' );