Most threads that have the green open for applications tag are going to want more players in their threads. More people = more posts, and more posts = more activity, more activity = higher retention. 

If you’re looking for something thematically that’s highly specific, you’ll be more limited since while some people will have interests that line up with your own it doesn’t mean the most populated threads will. So you’ll want to find something that’s close enough, or make the RP yourself. 

But if you’re just looking to jump into something? There’s tons of Roleplays looking for people, and a lot of them are flexible with post size unless it explicitly states otherwise in their OOC.

     Oh, and welcome to the Guild!