Might help also to describe what you think feminism is, since it’s one of those terms that is overloaded.
I once had a physical therapist tell me she wasn’t a feminist because she thought women couldn’t be as physically capable as men when serving as soldiers, and seemed to believe feminism requires treating women exactly like men.
I told her I was a feminist because I believe in equal rights for men and women, an idea she did not seem so opposed to.
"feminazi’ is kinda like calling a woman a “female”. Its use conveys a “I’m a sexist pig” message you do not seem to intend.
Better terms for women who believe that (cisgender) women are superior to men.
Some of these may covey other messages in their usage.