My best advice would be to not fall into the trap of thinking of us as an alien species that you need to study up on to understand.
Also to avoid believing the lies of incels and other people who think women really are an alien species.
True words spoken, always set yourself in the character's place as a PERSON and try to think what fits them in terms of PERSONALITY and not just gender. Both men and women can be tough, meek, scaredy, proud, valiant, evil, heroic and everything else. Build that character with their backstory. Show why that girl is who she is. Or just blame it on personality. I mean, no one forces you to flesh out a character's backstory, both male and female.
Just like MoonMoon said, try not to get too much lost in the usual stereotypes. On the other hand, you are the author, you consider what is best for your story. No one will shame you when you choose to design a caring girl that meekly follows some guy because she fell in love at first sight and literally gets all red with a single small compliment, nor when you decide on a badass fem MC that mutilates her enemies without blinking, swears right and left and loves drinking in pubs.
Develop characters through their goals, personalities, views, beliefs, their past, their upbringing. There's a lot of possibilities.