This probably won’t make you feel any better but as a woman I feel the exact same way as you.
I’m comfortable to say “impure thoughts” or “acted on impurity” but anything more detailed then that I don’t feel comfortable saying even though realistically we live in a hyper-sexualised world and everyone has thought about sex or done sexual related things.
I think it helps to think of the “big picture” instead of just focusing solely on our own confession and feelings-IOW being aware that the priest is in the same shoes as us regarding temptations and also focussing on the “why” something is a sin to God rather than the “what” (I hope that makes sense).
This is easier said than done though I know,and I also won’t do a face to face confession without the screen because I feel like what if all the others women at the Church are confessing things like lying,getting mad at their kids,being short with people at work etc and I’m the only one saying all this sex related stuff…each time the priest sees me he’s maybe going to think im a sex maniac
I think this can be even more so if we come from cultures where we don’t generally talk about our sexual feelings with “random” men we are not in romantic relationship with, especially older ones and if we have been previously around the types of guys that would be turned on by such “perception of you being a sexual being” etc…
Maybe it would be helpful to look for a priest of a different culture than yours or one that another female friend has been comfortable confessing with?
It might sound controversial but maybe some women would be more comfortable confessing with gay chaste priests but the Catholic Church doesn’t allow gay (chaste) men to become priests as far as I’m aware.