I'd possibly make a separate thread for your more common kinks. Mind control and hypnosis are kinks that I assume aren't popular because I constantly see people wanting help to find partners when those are their main kinks. For that, you'll have to have some patience and keep bumping your thread in order to find that someone who matches with you. From my experience, a good bulk of role-players like agency and independence for their characters within a story. And those who desire mind control plots or hypnosis seem to want the opposite for their partner's character.
If you don't know what you're into, possibly look at F-list and find ideas that way. Or look at other people's threads and their lists of kinks. Like, look at a list of more common and basic kinks that you're curious about and that you'd be open to trying. Possibly try writing a few short solo stories about those more common kinks, so that people can see what it might be like writing an rp with you. I'd make a separate request thread though, just so that it doesn't seem like the two things are intertwined. For instance, you don't want someone to click on your request thread and see mind control as a part of your list of kinks and just assume that all the kinks listed have to be included.
Also, for your main thread, I'm not quite understanding what is going on with the spoiler within a spoiler within a spoiler. Especially when you don't have much in the thread to begin with. It's a strange formatting.