I thought there was something more to being trans

I used to literally believe that trans women were actual woman trapped inside a male body vice versa, and with sayings like “being born in the wrong body” or “being a certain gender on the inside” I don’t think I was the only one. But I feel like this is actually a sort of spiritual or religious way of viewing things that comes from the idea that we are not our physical bodies or there is a part of ourselves separate from our physical bodies, and despite being non religious I still thought this but through a more scientific point of view, I thought there was something inside the brains of trans people that made them similar to their desired gender but now I know there really is no evidence for that but that is still a sort of spiritual way of looking at it, this idea that there is some sort of inner self, soul, or mind that is actually the exact same as the opposite gender has the same level of validity as any other religion, at least to me, and it’s fine if you believe that but to pass it off as the truth is a little questionable.