Right, the trinity makes no sense, nor oneness for that matter.
God never created 2 wills and 2 minds within His state of being.
Yes Christianity and their 'isms' don't make any sense but then neither do you being the part of that system.
Scriptures teach The One Who came as The Son in flesh is none other than YHWH of OT Who had visible form in contrast to YHWH Who is utter transcendent.
It's YHWH in visible form spoke as The Father as well as on behalf of The Father because Transcendent YHWH can't be seen, heard or approached by any creature.
So there was only One Speaker in OT and the same Speaker is also in NT. He revealed The Father to His Covenant people.
And again the scriptures don't teach about there being multiple Persons in God nor that The Father and The Son are two distinct Persons.
No one can ever pray directly to The Father nor can pray to The Holy Spirit. All prayers are only addressed to The Son of God Who is the only Mediator. He is the only link/bridge between creation and transcendence.
All these 'isms' of Christianity falls short of true understanding.
The Visible form YHWH was in and came as The only Spiritual Seed (Son of God) wasn't created and stamped as God. If you believe this - it's not based on scriptures. He didn't receive His body of flesh from Mary but rather used her womb for His supernatural birth as decreed by Him in OT. All the trash theologies that Christendom has taught will bring people to utter destruction.