I think it is helpful for believers to see the Church from two perspectives.
The first is The Church(upper case) as ordained by God:
Matt 16:18-20 "And I also say to you that you are Peter, and on this rock I will build My church, and the gates of Hades shall not prevail against it."
This is a spiritual Church. According to Jesus, it is His Church. It resides in the spirit of all believers. It is eternal according to Scripture. In this Church there are no denominations.
The second is churches(lower case). These are worldly institutions. There is no doubt that 'churches' created and maintained by man are often manipulative, greedy and corrupt. They do much good but they also do much evil. They often do what they must to survive in the politics of the day. They are imperfect and will someday cease to exist(like all things made by man).
Christians could say, "We are The Church, and we go to church".
Of course, this is all silly to non-believers.