Russian

Russian is an Indo-European language, widely spoken in Russia, Belarus, Kazakhstan, Kyrgyzstan, as well as widely spoken throughout the Baltic, Caucasus, and Central Asian countries. Russian is one of the six official languages of the United Nations and is also the second most popular language on the Internet, after English.

In addition, Russian also has notable lexical similarities with Bulgarian due to the common Church Slavic influence on both languages, as well as due to later interactions in the 19th and 20th centuries. To really understand and learn this language well, you need to put in a huge amount of time and effort. Russian has an alphabet that is completely foreign to an English speaker. Russian uses the Cyrillic (Kirin) script used mainly for the Slavic and Central Asian languages. The Russian alphabet is a Cyrillic alphabet consisting of 33 characters, including 31 letters, and 2 accents. A Russian speaker must be very focused on stress in order to get the correct pronunciation, sometimes a little mistake in stress can change the meaning of words.

Native speakers: 150 million

Refer to: https://en.wikipedia.org/wiki/Russian_language