I do not believe there is some secret smoke filled room with a circle of people deciding the fate of the country. That is what the big government people use to make the concept of a deep state seem like tin foil hat stuff.
I do believe there is a political class of people however, who are rolled up and are part of a large government entity that defends itself first. These career government people know how to game the system to serve themselves first.
I heard someone describe the point when Trump took office as an earthquake across government. Everyone knew the gravy train was derailed so they went into a prevent defense hoping to ride it out for three years.
There was no secret here. The GOP publicly threatened President Trump on many occasions. Everybody in government took their cues from that. The coup was fully bipartisan in nature.