What people "believe" about God is what people believe about God. Are we going to judge science by what people "believe" about science or look at what is actually documented?
The attributes of God are documented in the various Scriptural Texts of the major global religions. There is significant commonality between them all.
In Hinduism the concept of the Trimurti is very much similar to the Trinity.
1. Brahma. Is the equivalent to the Father in the New Testament. "Brahman is the Supreme imperishable." (Bhagavad Gita)
2. Vishnu. Is the equivalent to the Word in New Testament doctrine. The Word becomes flesh in the Son. Similarly, Vishnu becomes flesh in the form of an Avatar. "Whenever righteousness wanes and unrighteousness increases I send myself forth.For the protection of the good and for the destruction of evil,and for the establishment of righteousness,I come into being age after age." (Bhagavad Gita)
3. Shiva. Joins Brahma and Vishnu as the final piece in the Godhead. As Vishnu states: "Brahma, Lord Shiva, and I are the supreme cause of the material manifestation. I am the Supersoul, the self-sufficient witness. But impersonally there is no difference between Brahma, Lord Shiva, and Me." (Bhagavad Gita)
Hope that helps. As I say, I'm not interested in what people mistakenly believe. The evidence of their folly is in their own Scriptures.
