As a orthodox christian i recommend Jay Dyers channel and website:

https://jaysanalysis.com/
https://www.youtube.com/user/jaydyer

He is former protestant and catholic who turned orthodox 10 years ago(?). 

Also protestant and catholics will find his content interesting because he quite often debates catholics and protestants about theology. I personally enjoy his debates against pagans, as i use to be one.

Jay Dyer vs. Erick Ybarra (catholic) debate about Papacy: https://youtube.com/watch?v=pkIfo15jV-8

Jay Dyer vs. Nick Fuentes (catholic): https://youtube.com/watch?v=y5TrGzQ8woQ

Jay Dyer vs. Boglord Dave Martel about paganism: https://youtube.com/watch?v=GLlGNihWIJ4

Also this is good too "Genesis vs. Atheism & paganism": https://youtube.com/watch?v=_0RN4CHxUzc