public $filters except login page

I work with filter method for check admin users authentication like this:

PHP Code:

class Filters extends BaseConfig
{
    // Makes reading things below nicer,
    // and simpler to change out script that's used.
    public $aliases = [
        'csrf'     => \CodeIgniter\Filters\CSRF::class,
        'toolbar'  => \CodeIgniter\Filters\DebugToolbar::class,
        'honeypot' => \CodeIgniter\Filters\Honeypot::class,
        'auth'     => \App\Filters\Auth::class,
    ];

    // Always applied before every request
    public $globals = [
        'before' => [
            //'honeypot'
             'csrf',

        ],
        'after'  => [
            'toolbar',
            //'honeypot'
        ],
    ];

    // Works on all of a particular HTTP method
    // (GET, POST, etc) as BEFORE filters only
    //     like: 'post' => ['CSRF', 'throttle'],
    public $methods = [];

    // List filter aliases and any before/after uri patterns
    // that they should run on, like:
    //    'isLoggedIn' => ['before' => ['account/*', 'profiles/*']],
    public $filters = [
        'auth' => ['before' => 'admin/*'],
    ];
} 


public filter work for all admin uri (admin/roles  - admin/users - admin/login) but i need to except admin/login because with this method i can not see login page and see browser error:

Code:

This page isn’t working right now
ci4.local redirected you too many times.
ERR_TOO_MANY_REDIRECTS

how do fix this problem?! thanks