It seems like a bit much to assume a school is horrible and sexist because someone isn’t doing well in a particular subject. Anyways, I’m a freshman engineering major at UCI and I did well in calc through going to all of the lectures/discussions and taking notes, doing all of the suggested homework and then going through all of the homework problems again before each quiz, then going through all of the homework problems (and also additional problems similar to the homework problems) once again before each midterm/final. It’s definitely a pain but doing practice problems and also reading the textbook is really what got me good results. You might be doing all of this already but if not, hopefully this helps! There’s also free peer tutoring for certain math classes 