Thank you for your question. Sadly, there are some people who advocate “feminism” who are dogmatic about it. Sorry you have encountered such people. As a teacher of philosophy, I do not take that approach of “you dare not question” and I reject those who do. Because I do believe we should question everything, including feminism.
As for where to start learning about feminism, not the dogmatic kind, I can recommend the book I wrote on it that is linked to within this article. It is my attempt at an introduction to the open-minded feminist philosophers. Another good book, though much more expensive, is Alison Stone’s: https://amzn.to/3PHqwhS