It would help to know specifically what Soviet bloc countries you are targeting. The politics of, say, East Germany, are very different from that of say, Serbia, and both are very different from that of the USSR proper.

FYI I did patrol assignments on the East German border, and can describe some aspects of their lives first hand. There is a 2018 movie called Balloon, which is a true life documentary of a plot to escape East Germany by hot air balloon. It gives a fairly accurate depiction of life on the other side of the border.

The Soviets were in charge, and controlled the rest of the Eastern European countries within the bloc.