Cannot get data from table of WordPress MYSQL

Hi, I got a table called newdata and there is a column called name. I’m trying to get the value of name where the ID is 1 by the following code:

<?PHP
$my_plugin = 'C:\laragon\www\NewSite\wp-config.php';
include_once($my_plugin);
$table_name = $wpdb->prefix . 'newdata';
?>

the result is array if $results = $wpdb->get_col($wpdb->prepare("SELECT name FROM $table_name WHERE id = 1")); and the result is 1 if $results = $wpdb->query($wpdb->prepare("SELECT name FROM $table_name WHERE id = 1"));.

But the value is actually blue, anything I do wrong?