Without being Russian I can provide you with an answer Hanna.
Russia is a quasi-democracy with a long term undisputed one-party government so you shouldn't except objectivity of media.
The owners of media are either members of the ruling party or even receivers of public funding and financing (directly or in the background).
There are of course many additional minor sources of information (e.g. newspapers, radio programs) that try to present a different angle of interior and foreign policy but they are extremely small to affect the public opinion.