Of course I do, it’s confirmed by an Orthodox Council and described in the Scriptures and Saints. No Council ever overturned the Council(s) of Orange, hence why you were unable to answer my question.Not sure how to interpret this comment; are you saying you DO believe in Original sin?
The idea that “Roman Catholics believe in original sin, but Eastern Orthodox believe in ancestral sin instead” is - according to everything I’ve seen on the topic - a relatively recent innovation, largely propagated by a specific priest (Fr. John Romanides), who I’m told also taught the bizarre and alien doctrine that the nous is located in the spinal fluid. Personally I have no interest in what’s taught by any specific individual unless it can be backed up with Scripture, Saints, and Councils.
To my knowledge the distinction between original and ancestral sin is neither dogma nor doctrine and is not held by the Orthodox Church as a whole; for example, here is a ROCOR website talking about our belief in original sin: