By the way, to add further.
PLs look into logic. "We" in Quran doesn't mean the Quran supports the trinity.
If the QUran supports the trinity, then why does the Quran focus on the absolute oneness of God?
"Say: He is God, the One and Only; God, the Eternal, Absolute; He begetteth not, nor is He begotten; And there is none like unto Him. (The Noble Quran, 112:1-4)"