>>752809
I honestly recommend reading great theological works from all sides, going to their church and thus checking out the local communities and see for yourself.
To me it sounds like you have somewhat of a general idea of these complex theological teachings but you haven't delved deeply into them beyond that, why are they a thing, what's the justification for it etc.
I say that as someone who was similiary indecisive so I read works like the Summa, City of God, the CCC, Orthodox study Bible, The Way of a Pilgrim, Orthodox Psychotherapy etc.
It's easy to judge ideas as unappealing or say that it doesn't really makes sense for us but often times there's a lot more to said ideas than just the general concept we have in our mind from osmosis.
I also think that you haven't researched too deply just yet by your last statement, unitarian churches are exactly for people like your current self, mostly casual Christians who haven't studied the several branches just yet in depth, so I would recommend doing that and eventually it will become clear to you who are really legitimate and who are not in their teachings.