In this guide I will teach you how to play with russians , so here we go!!!
1) If your teammate did something wrong say -Ty dolbaeb?
2) If your teammate did something good say - Krasava!
3) If you won clutch round -sosat suka sosat
4) Lets rush b - idem rush b nahui (same for /mid)
5) If something went wrong - pizdec
6) Give drop (politely) - dai drop pliz
7) Give drop (rude) - dai drop ili dam pizdi
8) I'm going to save - ja seivit'
9) If someone in other team plays good -pizdec cheater
10) Go eco guys, lets win next round with gun -eco odin raund a potom pizdi dadim s devaisami
11) When you win - gg izi
12) I'm from Russian - ja iz Rossii
13) American - pendosi
14) If you want to kick someone - kick etogo pidara
15) If teammates are thinking that you are bad -blyat pacani lagaet sorry
16) Polish - Kur.a
You can add "nahui" to every phrase.
Now you can play with russians and understand them

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Don't take this seriously....It's just a joke! :)

Sorry if I offended someone...