Your position is understandable but not good for you. The other apostles did not leave the faith because of Judas. The fight is real, very real. It is not much different from our forefathers who took up arms against the invading Islamics. They did not expect to return from the fight but they went because they were soldiers for Christ. Your baptism made you a soldier of Christ as well. At your particular judgement He will ask you why you left Him. 'Because others sinned' is not a good answer. Matthew 24:13 - He who shall endure to the end shall be saved.
Take up your cross and follow Me is not easy but it is possible. Find a good parish which teaches the Eternal Truths handed down to us. Educate yourself, pray your rosary. Stay on the Barque of St Peter, remember the storm on the sea of Galilee. Our Lord set things right in the His time.
“The other apostles did not leave the faith because of Judas.”
In the case of the RCC the faith and the church are two very, very different things.
L