About Russia and Russian people.

Many foreign people think that Russia is a very cold and strange country.
I don't know why they think so.
It is (it's) not the best country in the world, but it is not as bad as (somebody) everybody thinks. ("s" for plural)
It is (it's) not so cold. Our summers are very hot and sunny.
Our winters are snowy, but sometimes warm
We don't always drink vodka. (It is false) This is not true. Some people drink it, but not everybody (does).
Our country is modern and our people are kind and hospitable.

Your English is really good! Your words are also true, Everybody thinks Irish people drink all the time
and fight also. This idea in English is called a "Stereotype"!

About Russia and Russian people.

Many foreign people think, that Russia is a very cold and strange country.
I don't know why they think so.
It is not the best country in the world, but it is not so  as bad as somebody  people think.
It is not so cold. Our summers are very hot and sunny.
Our winters are snowy, but sometimes warm.
We don't always drink always vodka. It is false not true. Somebody people drinks it, but not everybody.
Our country is modern and our people are kind and hospitable.

Ты очень хорошо говоришь по-английски :) Молодец!