cant set up Germany localization in magento 2

Question

What i am doing wrong ? create folder in /www/app/i18n/vendor/de_de/ with this fildes:

--composer.json
--de_de.csv
--language.xml
--registration.php

composer.json:

{
    "name": "vendor/de_de"
    ,"type": "magento2-language"
    ,"description": "Germany language"
    ,"authors": [{
        "name": "John",
        "email": "xxx@xxx.com",
        "role": "Developer"
    }]  
    ,"extra": {"map": [["*", "vendor/de_de"]]}
}

language.xml:

<?xml version='1.0'?>
<language xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xsi:noNamespaceSchemaLocation='urn:magento:framework:App/Language/package.xsd'>
    <code>de_DE</code>
    <vendor>vendor</vendor>
    <package>de_de</package>
</language>

registration.php:

<?php

\Magento\Framework\Component\ComponentRegistrar::register(
   \Magento\Framework\Component\ComponentRegistrar::LANGUAGE,
   'vendor_de_de',
   __DIR__
);

after when this files created i run this commands:

php bin/magento i18n:collect-phrases -o app/i18n/vendor/de_de/de_de.csv -m
php bin/magento i18n:pack app/i18n/vendor/de_de/de_de.csv de_DE
php bin/magento cache:clean
php bin/magento setup:static-content:deploy de_DE

but site still on English, please tell me why ?

Answer 1

After this process you need to select locale from Admin > Stores > Configuration > General. Change locale and then run deploy command and clear cache. Now you can see your changes made in translation csv.