You cant be an apostate unless you left the one true church. Denominations who don't even claim apostolic authority are not the Church Christ established.
Yes and your institution is not the one true church. It is nothing like the one true church.
This is what the one true church looks like, you institution is the opposite of it:
eph 5:
26 to make her holy, cleansing her by the washing with water through the word, 27 and to present her to himself as a radiant church, without stain or wrinkle or any other blemish, but holy and blameless
It is holy, clean, radiant, without stain, wrinkle, blemish, holy and blameless. That does not describe your institution and nothing about being infallible. Your institution is stained, wrinkled and blemished etc. If ignores what should be done to leaders as set down in 1 Cor 5:11.
Eph 2:20+
Built on the foundation of the apostles and prophets, Christ Jesus himself being the cornerstone, in whom the whole structure, being joined together, grows into a holy temple in the Lord. In him you also are being built together into a dwelling place for God by the Spirit
Your institution is built on a foundation of wolves, false teachers and liars. The HS will never dwell where children are sexually assaulted.
Heb 10:24+
And let us consider how to stir up one another to love and good works, not neglecting to meet together, as is the habit of some, but encouraging one another, and all the more as you see the Day drawing near.
Yes we saw the love and good works and encouragement shown to the victims of your institution. They were treated like criminals and when they went to court they had no support from your institution.
It also fails the scriptural test, some of them are:
1. Does it add to scripture? Yours does.
2. Does it go beyond scripture? Yours does.
3. Does it go beyond scripture? Yours does.
4. Are the leaders a good example? Yours aren't.
1 Tim 4:12
Let no one despise you for your youth, but set the believers an example in speech, in conduct, in love, in faith, in purity.
1 Peter 5:3
Not domineering over those in your charge, but being examples to the flock.
5. Do the leaders met the requirements for leaders, set out in Tim and Titus. Yours don't.
6. If you test the doctrines against scripture, like a good Berean, will they agree. Answer NO
7. If you test the fruit, will it be good or evil. Answer Evil
8. Do the leaders expose evil. Answer NO
9. Does it produce bad fruit. Answer Yes - therefore it is the bad tree
10. Are its leaders false teachers. Answer Yes
11. Are the leaders wolves in sheep's clothing. Answer yes they harm the flock and teach false doctrines.
12 They take the best seats.
So there is absolutely no evidence that your institution is the one true church, so it is apostate.