HI,
Google search engine and other do not consider page redirect or duplicate content good practise.
You can enable SEO feature in prestashop from back-office. This will make website url seo friendly with doing any coding or change in .htaccess file.
PrestaShop Tutorials Videos [How to do Tasks]
https://www.prestashop.com/forums/topic/907438-prestashop-tutorials-videos-how-to-do-tasks/