"You" as in the person answering the question, i.e. me, or "you" as people in general?
There is no "general" answer to such a wide-open question. Maybe you want to communicate with a group of foreigners who are in your district, or maybe you want to visit a particular country, or work there.
But do learn a language, possibly a "world language" such as Spanish, simply to find out that other languages are organised in different ways, and thus it might be difficult for non-English speakers to express themselves clearly in English. Not every word translates precisely with just one word in the other language. For instance, in French one word could mean "pregnant" or "audio loudspeaker", and another word could mean "type of cooking dish" or "river ferry". In many languages the English "save" needs three words to translate it, depending on whether it is "Jesus saves", or saving money in a bank, or a paramedic saving lives.