Is it safe to walking in the streets in Russia?

 
It is not a surprise that a lot of tourists consider Russia as the a country where you can drink vodka anywhere and meet bears on the streets. There is one exactly way to meet the a bear on your way (and not necessarily in Russia) you must drink vodka, or something like, this as much as you can beforehand. Otherwise, if you are in sober mind, you should move down the street looking around because you can bump into “gopnics”. Gopnics are Russian muggers. There Here are a few tips to prevent this from happening.
Firstly, do not carry your pouch wallet in your pockets very protruding so that everybody can see it. Next tip: if you have been get caught by gopnics, try not to answer on their questions because their goal of their questions is to discover how much you have you got with on you and how much you earn in a day. Knowing this, they can blackmail you after. And the last tip: if you see strange group of strangers people on the street and they are moving toward to you, change your way direction, try to cross the street where a lot of people can see you.
That’s all! Good Luck in Russia! 

A pouch is something Kangaroos have on the front of their belly and a wallet is something you store cash in.

I am sorry but I cannot explain the other corrections, it's just the way it is.  But I think your English is good, there would be no problem with comprehension. Your English, however, just needs refining here and there.  How can you do this? Practice, practice, practice.  In English, we say: practice makes perfect!