You do not mention which country you are living in, Europe is not one country. But, it is not possible for you to become a citizen.
You are an illegal alien, you cannot work, rent accommodation, get medical treatment, get a driving licence, or get married. If you try to work you will be taken advantage of and there is every chance your employer will report you to the authorities if you do not do what he/she wants. You are in a very bad position.
The best thing you can do is to return home before the authorities find you - and they will find you!
I am guessing you are still in Russia.
You can perhaps have a friend go into the immigration office for you and see how much you have to pay for an over stay.
There might be a way to stay and get an extension on your visa but it is going to cost some bucks. Hire a lawyer if all else fails.
Look on line for info on an over stay and see if they post any info.
There must be a way how to get yourself legal as all the Africa's coming over the Mediterranean get least permit to stay and chance to apply for visa. You did not provide any information what is crucial to establish what is best for you to do. I do not expect you to have money to get married so you can try to pretend you are gay and your government is after you a stupid country like England may try to save you from that evil:)
It's impossible to become legal if you are illegal. You need to return home before you are discovered and try to return on a legal visa
You can't. You'll need to return home and apply for a valid visa.
Europe belongs to Europeans and only to them and nobody else...
You're not wanted in Europe. Go home. I don'tcare if your country is wore torn. Its not our problem. Leave. And when you get back to your homeland tell your people to stay there.