The experience of women on dating sites is this: lots of messages from men that basically say (often exactly this): "Wanna fuck?" Like, that's the whole message. Except there's almost always multiple misspellings, no matter how short the message is. So it's more like "U wanna fuk?". And then those men go on their local message boards and complain that no one is responding to that pithy, well-crafted message and they can't find a spouse to settle down with and raise a family.
Put some effort into it. Wear a collared shirt. Brush your hair. Take a shower. Spellcheck. Find your smartest friend to help you make your profile. Don't pick things off your feet and eat them. Try to be funny.
It's really not that hard. Lots of humans have successfully mated with other humans. You can too!