I think when you look at the figure called the angel of the lord in the old testament who is identified as god and being with god, the plurality of god in the old testament, the claims of Christ himself and how the writers of the use the old testament quotes applying them to both Christ and god, it don’t think the trinity is an unreasonable thing to believe.
Of course if you want to bamboozle people with the fine print, it definitely can be done. Jehovah Witnesses are good at that. Think so far outside the box, you forget how to think within it.