Custom Validation doesn't work?

The way I did it:

Config/Validation.php

PHP Code:

/**
     * Stores the classes that contain the
     * rules that are available.
     *
     * @var array
     */
    public $ruleSets = [
        \CodeIgniter\Validation\Rules::class,
        \CodeIgniter\Validation\FormatRules::class,
        \CodeIgniter\Validation\FileRules::class,
        \CodeIgniter\Validation\CreditCardRules::class,
        \App\Validation\MyRules::class
    ]; 


Application/Validation/MyRules.php

PHP Code:

<?php namespace App\Validation;

class MyRules
{
    public function valid_login(string $email, string $field, array $data): bool
    {
        $db = new \App\Libraries\NcrsEbnDb();
        $hashed_password = $db->getPassword(trim($email));
        if ($hashed_password == '')
            return false;
        else
            return password_verify(trim($data[$field]), $hashed_password);
    }

    public function valid_password(string $password, string $field, array $data): bool
    {
        $db = new \App\Libraries\NcrsEbnDb();
        $hashed_password = $db->getPassword(trim($data[$field]));
        if ($hashed_password == '')
            return false;
        else
            return password_verify(trim($password), $hashed_password);
    } 


..etc

Simpler is always better