Greasy Fork is available in English.
Automatically selects the languages you want.
// ==UserScript==
// @name Default Google Translator Languages
// @namespace https://greasyfork.org/en/users/670188-hacker09?sort=daily_installs
// @version 1
// @description Automatically selects the languages you want.
// @author hacker09
// @match https://translate.google.com/*
// @icon https://t2.gstatic.com/faviconV2?client=SOCIAL&type=FAVICON&fallback_opts=TYPE,SIZE,URL&url=https://translate.google.com/&size=32
// @grant GM_registerMenuCommand
// @grant GM_getValue
// @grant GM_setValue
// @run-at document-start
// @noframes
// ==/UserScript==
(function() {
'use strict';
GM_registerMenuCommand("Save Current Settings", function(){ GM_setValue('Settings', location.href); }); //Adds an option to the tampermonkey menu
if (window.location.search.match('tl=') === null && GM_getValue('Settings') !== undefined) { //If the current page doesn't have any language set
location.href = GM_getValue('Settings'); //Set the default language
} //Finishes the if condition
})();