1. No pickup 'technique' works for everyone...
...and anyone who says theirs does is full of shit. PUAs like to make picking up seem 'simple' because it's easier to sell that way, but IRL there is no such thing as straightforward encounter between two human beings. The outcome of any given situation will depend on thousands of factors, many of which are completely outside your control. This is why meeting new people is so scary/thrilling.
A good player has the ability to adapt their conversation, manner and approach depending on the situation and the person. It's called 'emotional maturity' and it's a totally learn-able skill....but it takes practice.
Basically, anyone who thinks all people work the same way is completely delusional (or they're lying to you to make you feel like they have all the answers.)
2. Most dating and hook-up 'systems' are placebos.
What do I mean by that? I mean that none of them work because they're actually any good; they work because having a plan gives you more confidence.
My local coffee shop is also the regular meeting spot for a local 'life coach'. He brings his clients in and gives them pep talks about revamping their tinder profiles, what to say on the first date, and how to score at parties. He uses this system that's all about channeling the 'spirit' of different animals, depending on the situation: "Ready to close the deal? You're a bear! Feel that power!"
When we feel self-conscious, anything that distracts us from our anxiety is going to help us function better (whether it's pretending to be a bear, or thinking about our last knitting project.) Feeling as though you have a 'plan' is helpful. It's a like wearing your 'lucky underpants' - it gives you a psychological edge, even if the threads themselves don't make any a difference.
Sorry if I've just ruined your favorite pick-up strategy. I'm a fan of conquering anxiety by any means possible. I'd just recommend that if you decide to use a placebo pick one that doesn't make you look stupid or encourage you to act like an asshole.
3. Seeking quantity over quality is a loser's game.
You want good experiences, not numerous ones. Having a lot of bad sex with people you don't like is barely better than having none at all - it leaves you feeling fucking awful about yourself (just ask any A-list celeb.) Likewise, fixating on fucking 'perfect 10s' often results in shitty experiences. You might be able to brag about it at the pub, but you're going to be missing out on the really good stuff - connected, intimate sex with someone who actually cares about you.
When you shift the focus from quantity to quality, you'll start noticing the people who can give you amazing connection, incredible sex and who will treat you like a human being. Also - bonus - having standards about the type of person you're into, beyond the superficial - makes you a much more desirable partner.