I'm going to share my thoughts as well, if that's okay!
First of all, being nice in the roleplaying world doesn't really get you any partners. It's wonderful when partners are polite and also open to discussing plots, kinks and settings, but it's often our preferences that make it difficult for us to proceed. Although we all love roleplaying and writing, we've all got different preferences, meaning we like to roleplay different things. The majority like a variety of things, which makes it "easy" to find partners. Others -- such as myself and probably also you -- only like a small fraction of what's out there, so we struggle to find partners. And if we do find someone who shares the same preferences as us, we also have to take other things into consideration. Writing style, kinks, communication skills, etc. We might not be compatible after all....
What I am trying to say is, you can do everything right, and still end up empty-handed. It has nothing to do with you as a person, or even as a roleplayer. It has everything to do with your preferences.
Roleplaying is a hobby for us, and we often have lives outside of Blue Moon. This means that our time here is valuable and often limited. I never start a roleplay I wouldn't enjoy. I even tend to drop roleplays rather quickly because I lose interest. I think female writers are just picky in general when it comes to partners and plots (maybe even kinks too). But that being said, I would never tell anyone to change their preferences, as I would never change mine. If you know what you want, wait until you get it.
I know it's frustrating. Sometimes it even sucks. But be patient, and I am sure the right partner(s) will find you. Or you'll find them, whatever comes first!