Brilliant article by Kathleen Stock, she explains it so well.
https://quillette.com/2021/05/18/lesbians-arent-attracted-to-a-female-gender-identity-were-attracted-to-women/
In particular:
Working out your homosexual orientation in a world in which heterosexuality is the norm can be difficult. Taking the difficulties on mentally while negotiating society’s expectations of you as a young female is tough. It’s fairly obvious that young females tend on average to be less assertive, more anxious, and keener to please than young males. Put these tendencies into a queer community in which young lesbians have sought refuge and comradeship, and in which there are also trans women self-declaring as fellow “lesbians,” and you will inevitably find lesbians, whether themselves trans-identified or not, pressured into sexual relations with members of the opposite sex, and in some cases succumbing.