Translate strings in wordpress code

Hi , I have a woocommerce store, we are using polylang to have both french and english version of the website. So far, website is mostly bilingual but some strings are still in french in the engligh version and some others in english in the french version. The biggest point of the job is: - Woof product filter on homepage - Both Paypal and Paysafe Gateways descriptions in checkout Would also add fix javascript issue in woof product filter on home page. If it make that easier, woof filter can goes away and we can use woocommerce's default one but you'll have to make it work with visual composer. I'd like to work with you to built this clean bilingual website.