Thanks for the help, I only just wanted my next serious story's protagonist to be believable. The last time I did a female protagonist, she was fun and funny: but it was from parodying many other characters, and so it so happen to work out.
@annascarlson
How I usually write girls is ..kinda how it has been suggested here: character first, and initially not too much thought into which gender they are in most scenes. But in doing that, I THINK I default to "traditionally male" reactions sometimes.
To explain it better:
Guy characters have individual personalities but when displaying more extreme emotions, they would naturally default to stereotypical male protag behavior (Can be violent, hungry very often, some are VERY frisky, ect)
Girl Characters would have individual personalities but when displaying extreme emotions it's a 50/50 thing for them to keep their personality, or immediately do what I feel comfortable writing: stereotypical male protag behavior. This is sometimes in spite of it being strange for that her to react this way.
Then to answer: "if you give some examples of your writing and what is bothering you maybe people can help more"
I feel most of the girls I write who are protagonists and/or part of the main cast will slowly become more masculine. Like, probably with Tomboys it was like whatever.. But with ones that aren't; I probably think "What would I do?" in some protag situations, and slowly she starts doing "cool dude things" I would like to do if I was in the story, or directly copying a male protagonist from another series. It's sometimes not permanent, but it can be REALLY bad.
The worst scenario was a supporting character, who was OK at first.. But when she taken out of the action and not doing steretypypical anime behaviour, and parts called for her to be more introspective; I ended up writing her so badly during this that she seemed like she suffered some type of lobotomy, and could barely put together coherent sentences.
And in the previous book it was extremely easy to do these kind of scenes from a male and tomboy perspective, but as soon as I tried a completely feminine perspective: there were no words that came to mind.
Also I'm making this way too long, so I'll emphasize the reason I asked for help: like I mentioned my next thing's protag is a girl. The setting is supposed to be light horror, so all the characters actually has time to make decisions as it's not going to be constant action, ect... I want her decisions to make sense and not unintentionally be exactly or similar to all the males in the cast: as these surround her crush, who is actually already dating someone, how she react to her new friends (male and female) , how she reacts to pretty much everything..... At most I got that she acts Tsundere, because she was a orphan and is used to having to be on guard, her crush is the first person who she could be mostly herself with. She also is contemplating leaving that area to start fresh though because he's dating now, but doesn't want to abandon her friends.
And that's it... I feel like as soon as I start writing her she'll be a stereotype or clone one of the guy character...