I'm sorry you felt chewed out by Christians. I hope it was really just an animated conversation, but still sorry you came away from it hurting more.
I won't go into the "tolerance" issue because it really is a whole 'nuther topic. Please realize that what the world today declares as tolerance isn't what many older Christians know as tolerance, ok?
I'm not sure what exactly you are looking for in the way of Spiritual advice.
I have Native American roots, along with Scot and strong Christian roots and experience. I blend them quite nicely I think, as many of my ancestors also did. This is one sense where I believe that when one considers only ONE Great Spirit and only ONE triune God can mean the same thing.
I wonder if your turmoil is coming from the wooing of the Holy Spirit, Who wishes to Guide you, and you are resisting?
You also may be experiencing different things from/for different reasons. Your distaste for anything/one who "clashes" might be part of an anxiety disorder, and not founded in your faith.
Try to allow yourself to be guided. Continue to study and ask the Great Spirit for Guidance. He promises to give it.