I'm a Firefox Focus user in mainland China, which has a inconvenient access to Google or DuckDuckGo. I hope to use a search engine of global (like Bing instead of Baidu), but there is not a choice like this. To solve this I have to type "b" and navigate to Bing, which is some sort of inconvenience. Firefox has a great feature of adding a custom search engine, I hope that the useful feature can be added to Firefox Focus.