Only 2 reliable ways to convert.
1: revolutionary rebels from a slider change (I forget which one). If they rise up in a province that is not your religion and you collapse to them, they will enforce that religion as state religion. Religious zealots cannot do this between religious groups, so they are no good for you.
2: If you only have one province and you go bankrupt, you will adopt that province's culture and religion, no matter what they are.
Either way will be painful and will involve taking some christian land. Nobody said that being Loango was anything other than suffering.
1: revolutionary rebels from a slider change (I forget which one). If they rise up in a province that is not your religion and you collapse to them, they will enforce that religion as state religion. Religious zealots cannot do this between religious groups, so they are no good for you.
2: If you only have one province and you go bankrupt, you will adopt that province's culture and religion, no matter what they are.
Either way will be painful and will involve taking some christian land. Nobody said that being Loango was anything other than suffering.