Sending random bullshit like that never works, ever. At least not over the internet. If you were at a bar or something then yeah you could get laid asking women that as an opener, but only after you'd had your ass kicked and been thrown out a bunch of times.

I used to do the whole casual hookup thing. It's not hard at all. Be attractive, don't be unnattractive, don't just lead with sex actually have a conversation with the person for long enough for both of you to begin to know and trust each other, broach the subject, and if they're game then go over the when and where and how and what of it all on the way. Done it more times than I care to admit.

It was even easier when craigslist was a thing because you could make an ad stating exactly what you were there for and what you wanted and could give in return. You had to sort out some spam, sure, but you'd get a bite eventually if the bait was good enough.

Dudes that just send shit like "suck my dick/wanna fuck?" as an opener literally have their dicks in their hands most of the time.