The trinity is easily disproven
The trinity says the father is not the son, the son is not the spirit and the spirit is not father. But it says they are all the same one god.
In English, the word "is" has two main meanings: numerical identity and predicative identity. Numerical identity means that two words refer to the same thing, for example, "My father is my brother’s father." Predicative identity indicates that the first word has the attribute described by the second word, or belongs to the category named by the second word, for example, "He is blue" or "He is a man."
If the Trinity’s claim uses numerical identity, then it is contradictory. We can analyze this using the transitive property of identity, a fundamental rule of logic: if A is identical to B, and B is identical to C, then A must be identical to C. Applying this to the Trinity: if the Father is God and the Son is God, then the Father would have to be the Son. But Trinitarian teaching says they are distinct, which creates a logical contradiction. Thus, the three persons of the Trinity are not numerically identical.
Predicative identity fails because if “is” refers to being the category or having the property of god then there are 3 not numerically identical things that are the category of god and thus not 1 god.
The only way to say that three non‑identical things are one thing is to say they are different parts of one thing. Which is a heresy called partialism.
One might argue that the Father, Son, and Spirit share one essence, and that this essence itself has one consciousness and will. But this confuses predication with entity. Treating the essence as a conscious agent treats the predicate as an entity. The 3 persons which have the consciousness of this entity are either parts, or manifestations or modes of the same conscious entity, this is the heresy of partialism or modalism.