If it started around your early teens
Yes.
and you kinda thought the idea of becoming a girl was cool before that
I don't think so, I don't remember.
and then you realize you can only really get off to imagining yourself as a woman and someone sexing you - it's trannybrain and it's unfixable, sorry.
There must be a way to recondition myself?
I personally tried dating a girl in highschool, who was older and got me to get out more, be more sociable and confident, and pursued a relationship - and I had issues there, sometimes I couldn't cum without imagining AGP shit.
This sounds very bad.
I repressed it and avoided dating, tried to fix other areas of my life, but this was always in the background
Yeah, it is kinda always in the background. But when I come, it disappears for a while.
and I pretended it was a fetish and I'm normal besides that, I knew I couldn't get off without some idea of being a woman being a part of my imagined scenario.
Yeah, it's how it works now. I don't fantasize about being a man in sexual fantasies because being a woman is so much arousing. I can't even relate to being a man fucking a hot woman, the fact it never happened doesn't help.
I eventually trooned because repressing ruined my life, I didn't want to continue living, and I didnt see any alternatives. I'm pretty good now. It's difficult but I'm glad I did it, I just wished I'd done it sooner
I don't want to troon, but it's confusing.