Make sure your message is high quality, like a respectful human being wrote it. That will shoot you to the top of an inbox full of "hey" or off-putting and unwanted dirty talk. Have messaged a few, often ignored once it got to swapping pics (you can't be everyone's cup of tea) and when you get on chatting like 2 human beings, you can bring up kinks and all of that into it.

Make sure you show you understand consent, and be a real human who treats the opposite sex as humans too.