Why are you changing the subject from the deity of Christ to the Trinity? There are many true Christians who do not believe in the Trinity, but one thing they all believe in is the deity of Christ whether they believe in the Trinity or not. Chances are high that they are not true Christians if they do not believe in the deity of Christ. I personally believe in the Trinity. I see it all over the Bible even though the word Trinity is not used.
It is belief in the deity of Christ that separates false religions from true Christianity. This is a major test to use when testing the spirits. You do not believe that God came in the flesh through Jesus Christ. That means you flunk the major test. That means chances are high that you are following another Jesus, not the real one. I don't know if God has any exceptions for any reasons at all like perhaps mental illness, confusion etc, but it is indeed a dangerous belief. Of course, my beliefs are based on the Bible (including word studies of the original languages) and the Holy Spirit leading me. I know you don't believe in all the Bible, but instead follow some spirit living in you that you call the living god who you do not even test to see what kind of god he is.
We have gone through many hours of discussion on this board about the deity of Christ. I don't have time to go through all this again. If you are interested in what the Bible says about the deity of Christ you can read our old posts, or even find debates on YouTube about it. I know this is important, but my personal life is very hectic and busy right now. I was off today and didn't get half done that I needed to. You don't need me to type all this stuff out for you. You are capable of your own research if you are interested. Maybe others will chime in who, hopefully, know the truth about the subject.