This bunch of code is for to hide WordPress Login Page

functions.php

<?php

// Add rewrite rule to use custom path for accessing the wp-login.php file
function redirect_custom_login(){
    add_rewrite_rule('custom-login', 'wp-login.php', 'top');
}
add_action('init', 'redirect_custom_login');

// Redirect if user come from 'custom-login' url
function redirect_to_home_page(){
    $newLogin =  'custom-login';
    if (explode('/', parse_url($_SERVER['REQUEST_URI'], PHP_URL_PATH))[1] !== $newLogin) {
        wp_safe_redirect(home_url(), 302);
        exit();
    }else{
		if(is_user_logged_in()){
			wp_safe_redirect(admin_url(), 302);
        	exit();
		}
	}
}
add_action('login_head', 'redirect_to_home_page');