Total imbalance (Sid Meier's Civilization 6)

In short farts blasts off to outer space.
I started playing in the Russian Empire. Played to 1800го ad and realized that they had made a mistake. As Tivu I came up with urban Sims, then did not pay attention that there are certain victory conditions.and in the end realized that I have a great well-rounded Empire, but no specific bias in some branch, so the victory will not win.
Started the game again: just thought of a way of development, otherwise all began to build and develop and now here you are - I in all the cracks are barbarians. I can't get them off. They just non stop will spawned troops and just overwhelm my cities, I don't have time to produce soldiers or to buy.
What for a glitch such? In the first game this was not. At the start a little pokotsali and never saw him again, and then they just dominated me