I'm a coder and I have no idea how to do this
Do you want it to show matches with people who are around your location, or anyone on the internet? If it's the latter, maybe try starting a dating community, if there isn't one already.
You could have people start a thread with the basic info: age, location, gender, sexuality, etc. Then what you're looking for: age range, hookup or long term, etc.
The comments could be general questions like an AMA to get a better idea.
If someone likes your style, they can send OP a DM