Where can I find legit dating advice?

That's not "just be confident" "just be yourself" "just put yourself out there" "just talk to people". Something that actually goes step by step and explains meeting and approaching.

I've been struggling with dating my whole life, never been able to attract women. I'm an introverted and asocial quiet guy who doesn't have many friends and don't go out often. So I really don't know where to meet women and how to talk to them in a way that leads to sexual attraction. The few times I've managed to get a conversation with women always end up in one of two ways, either ignored or friendzoned.

I've done the external things such as education, career, gym, grooming. But this social stuff is still horrible for me.