There is still one. ☦️
Nope. They have been completely destroyed to the ground after fall of Russia, only to be fully rebuilt by jews to be used for recruitment for WW2, and later for many similar mobilization purposes throughout of WW2 and later. This is why they stay away from LGBT crap and promote patriotism.
You don't need church.
Church is wherever two or more are gathered in His name.
Literally none of that is true. Also, Orthodox Christianity doesn't extend to just Russia. It's church isn't even the oldest, or the most expansive. In fact, it's only a slice of one of several Orthodox denominations. If you don't want to join the Russian church then just pick another one.
Downvote because what I said is true and it's recorded in history. Go and do your own research, don't accuse someone of lying just because you don't like what they say. All Orthodox churches have been infiltrated, including the Greek one which is the first people will jump to defend in this argument.