It seems to me the problem with this subject in forums and such is misunderstanding the purpose of the doctrine. It was not an explanation, not can such a thing be understood by us......
Some seem to think it is an explanation of God's nature. It is not, nor is that the purpose.
A quote from Timothy Ware; his book The Orthodox Church. Timothy Ware: later also known as Metropolitan kallistos Ware.
Metropolitan Kallistos (born Timothy Richard Ware, 11 September 1934 – 24 August 2022) was an English bishop and theologian of the Eastern Orthodox Church.
Speaking of the councils formulating the doctrine of the trinity.
Begin quote.......................................
"All Christians agree in regarding these things as "mysteries" which lie beyond human understanding and language.
The bishops, when they drew up the definitions at the councils, did not imagine that they had explained the mystery; they merely sought to exclude certain false ways of speaking and thinking about it. To prevent men from deviating into error and heresy, they drew a fence around the mystery is all."
End quote...............................................
So all the verses people have presented here and elsewhere, which verses are found here and there in scripture also are the "fencing" for the doctrine. Seeking an explanation from scripture is useless. As the doctrine is not for an explanation of God's nature.