Of course, trans women are technically men, but it's better for most trans women to be called women, girls, and she's.
A trans women was born male, yet she felt this was the wrong gender identity and started a quest to change her gender. Like I said, lots of trans women (not all) are comfortable being called women. So yes, she is technically male, but is more comfortable being called she. Even a transgender female character in Squid Game, Cho Hyun-ju, uses she/her.