As I think about the scope of corruption in this world, I often ponder the things of God. The enemy and his Cabal minions have managed to corrupt and alter truths to forward the agenda. One of Satan's prime tools is deception...but not outright. If they can manage to corrupt our food, media, medical establishment, etc. then why not the truths of God?
I have to consider that Christianity has been greatly compromised in many facets. All religions in this world have elements of truth but not the whole, unadulterated truth. For instance, Islam is correct concerning certain dietary restrictions but wrong as a whole. Buddhism has many great proverbs that align with Scripture but they do not serve the living God.
All false teachers in the Christian realm speak truth, otherwise they'd never be believed but what if those truths we're intertwined with falsehoods? That's how Satan deceives. For example, Satan spoke a truth to Eve in the garden (you shall be as God knowing both good and evil) but paired it with a lie (you shall not surely die).
What if the Bible has been altered by men and interpreters not under the guide of the Holy Spirit? What if the doctrines and practices that have been drilled into you are not Biblical or Godly? How do we know that our experience with the Holy Spirit isn't just seducing spirits keeping us deceived? How do we know that the religious institutions of men are of God?
I've pondered much and am curious as to your thoughts.
I question everything but the Lord Himself.
If you've read it that much, stick to what you know: (1) the original manuscripts are God's sufficient, necessary inspired Word; (2) God is real, he reveals himself to us, obedience and right are better than disobedience and wrong; (3) the Holy Spirit will guide you into all truth; (4) we are to be fruitful and multiply, not to be alone, and we are to edify one another; (5) no man comes to the Father but by Jesus (Yeshua). The quibbles you point out will sort out in time "until we all attain to the unity of the faith and of the knowledge of the Son of God" (Ephesians 4:13).
You seem to pursue Truth but not to be as interested in Jesus as Lord. Of course individual churches make mistakes and disappoint us; unlike most institutions it's their creed that they're sinners. But stick to the question of Jesus, "Who do you say that I am?" Keep working on the answer until you're satisfied. I can tell you that he is Truth Himself.