This was exactly me. It never felt "right" especially as I started to hear more about men trying to get into women's spaces. I tried looking into transgender more, trying to keep an open mind and the more I found out, the more and more I began to hate the movement before stopping all support.
This is basically how my thinking changed, too.
"What kind of nonsense is this???"
and then...
"OK, I looked into this very much, I have to be kind, everyone has right to self determination and bodily autonomy"
and then...
"Oh fuck them all"