riding tips

hello ladies! 💖 I was wondering if any of you would be kind enough to share tips and trick on how to ride the d. I'm a 24 year old and I've been with a couple of people but I've honestly never been good at riding. I've tried doing it on my knees and my feet but it always seems to slip out of me or I feel pain on the ends of my pubic bones (I hope you know which bones I'm talking about lol I don't know the proper name). I know the size of the d somewhat plays a role in this but I've tried doing it on a couple of people and it's always the same issue. I am on the thicker side and I definitely do have a fupa so does this have anything to do with it? are there certain stretches that you guys do before having sex to make riding more enjoyable for you? I'd love to hear your input because honestly I'm kind of insecure about not being able to and I want to get good at it lol 😭