For what it's worth ,Christianity started with the Orthodox and Catholic Churches. THe main break from the Catholic church was made by Martin Luther for the start of the protestant revolution. Taze Russell was a Seventh Day Adventist.
All the churches are part of a belief system, like it or not. If you have the need for what religion offers, most churches can fill that need. Just stay away from the radicals and the cults. Jehovah Witnesses included.
Good luck