I have quite a bit of experience with Wikipedia! I've created pages, made extensive edits to pages, uploaded photos to Commons, all in varying degrees over the past decade
Since you sound passionate about it, I would encourage you to sign up and edit that page too. You don't have to be an
expert, the world deserves better knowledge about that topic if you know something about it, and as you said, Wikipedia desperately needs a less male-dominated perspective

When you write on Wikipedia, what you need to do is to cite your claims with
reliable sources. This is what they name as reliable sources:
- Academic and peer-reviewed publications
- University-level textbooks
- Books published by respected publishing houses
- Mainstream (non-fringe) magazines, including specialty ones
- Reputable newspapers
So, I want to warn you, if a lot of your knowledge comes from more folksy areas like social media, YouTube, and personal blogs, it might be hard to argue for those being used as reliable sources.
Sometimes you can get away with that. Other times, Wikipedia can be more finicky about it. One time, I tried to use a direct quote from a game developer posted on their verified Twitter account as a source, but even that didn't meet their criteria!
Wikipedia tries to be very objective. Objectivity is helpful for articles about science and basic facts, but it isn't as easy if you're discussing a cultural phenomenon or a small subculture that hasn't already been extensively studied by academics.
I don't say this to discourage you, but wanted you to know this in case you
do decide to contribute, and then somebody challenges or removes your edit.
This happens to everyone who edits Wikipedia, eventually; it's nothing personal.If this worries you, keep in mind that
Wikipedia is not the end all be all of the internet. You could always share your knowledge on your own web page and use any source you want without fear of getting called out. I trust that you probably know a lot about it, and I'd be happy to read it.
But I also know that Wikipedia is one the major stops on the internet when people are looking for information, and it makes sense to want to hop on and contribute! To that I say, go for it!
Lastly, don't be afraid about "not being qualified." Wikipedia has a rule about
assuming people are editing in good faith, so don't be afraid to try! I think that's the best way to understand and learn more about the editing process.
*EDIT*
Oh and by the way, if you're not sure you're ready to make edits yet, you can also go to the article's Talk page and post questions, concerns, and critiques there. Hopefully, the other editors should see it and engage with you.
**ANOTHER EDIT lol sorry I'm a blabbermouth lol**
Another thing to do if you're too nervous to edit the main article is to get involved in
Wikimedia Commons. Commons a sister project where people upload photos to the public domain. Those photos can then be added to Wikipedia articles (and other websites/educational material too.) You can either find public domain photos, or take them yourself. You can even upload photos
of yourself wearing that style, if you're comfortable with that. Just keep in mind it's public domain.
In my experience, contributing photos often feels like a nice, low-stakes way to contribute to the Wikipedia project. It can help you build up the courage to edit by getting used to Wikipedia formatting and standards, and it can help establish you as someone who knows about that subculture. You might be surprised at how much mileage the photos can get around the internet, too.