Most people don’t want to just send a plain “hey, how are you” so give them a chance to ask something.
This is the internet so people’s attention spans are very short. You need to leave an open question or an obvious way in of some sort.
A lot of the times, reading profiles are kind of like reading resumes.
You find someone cute looking and you read their profile looking for a reason to say no.
Now, it sounds like this could contradict rule #1 but you still should never lie or misrepresent yourself.
But say that your idea of a perfect relationship/date is waking up in a tent or sipping hot cocoa snuggling around a campfire, then you should talk about how you like hiking or camping. Take a funny picture with your best gaming paraphernalia (extra points if it’s a Zelda shield). Think about what you want in a relationship and tailor your profile to make it irresistible to that person (just remember, don’t lie!