Arabic Language is your native language and you need to use that language on your magento 2 store. Please follow this article, Magento 2 Arabic Language Pack from Magento 2 translation project. The tutorial will help you get Arabic pack and install it fluently.
Other language packages available at language packs page
Below are two active buttons which are required operations before installing the language package. Let’s hit them to download and contribute Magento 2 Arabic Language Pack immediately!
Install the Arabic language pack via composer is never easier.
Install Arabic pack:
composer require mageplaza/magento-2-arabic-language-pack:* php bin/magento cache:clean php bin/magento setup:static-content:deploy ar-sa
Update Arabic pack:
composer update mageplaza/magento-2-arabic-language-pack:* php bin/magento cache:clean php bin/magento setup:static-content:deploy ar-sa
Now time to active the language pack for your Magento 2 store. From Magento 2 admin panel, navigate to
Stores > Configuration > General > Locale Options
Select Arabic (Saudi Arabia) and click
It comes to the end of tutorial: Magento 2 Arabic Language Pack.