If it's flawed then you need to prove to me how it's flawed not just say it's flawed. The trinity is flawed because there's never a true explanation of it in the Bible because it's not true. Whereas proving how God is only God and not Jesus is proven all over the Bible because it's the truth. The truth of who God is would not be some complex hidden understanding that we don't get! We as humans made it into something complex! The Old Testament is all about God proving that he alone is the true God and then Old Testament is also all about the Prophecy of His Son to come into the world and be the perfect sacrifice for our sins. Never is it prophetically pointing that the Son is also God but he is Lord but not THE LORD. And if once again you say what I said is just flawed but not prove it with scripture then all it is is your opinion and not proving it with scripture which is truth.
Isa 9:6 For to us a child is born, to us a son is given; and the government will be upon his shoulder, and his name is called Wonderful Counselor, Mighty God, Everlasting Father, Prince of Peace.