Some thoughts (these are my ideals, I aim for them but certainly don't reach them consistently)
My experience is that the best way to go about this (agreeing to disagree) is to use "I-messages" instead of absolutes.
And to be mindful of telltale words like "but" or "you", in such a context - upon noticing that I am writing a sentence containing these words, I've found it good to step back and really examine my motivation for writing such a sentence, and only post it if I still think it is a good idea to do so.
Also, I think there are at least two sides to exploring the quandaries of faith. One is to gain more understanding about my own doubts, and to be able to hold space for doubt. The other is to get the opinion of others, who might have some insight I am lacking.
In the past I have sometimes tried to convince others of things I was myself secretly doubting. Nowadays, when I manage to notice myself being really passionate about bringing across a point about some belief, I understand this as a useful pointer for myself that here is something I want to bring more attention and lucidity to, in myself. I need other people around me for me to notice this, poor them... but it's give-and-take and evens out in the end, at least I hope so.