You have told us all the things you "say" but words are only 7% of communication. Can you film yourself doing a couple approaches? You are probably nervous, leaning and not congruent with what you say.
Direct approaches require a lot of confidence, experience and congruence. I wouldn't suggest any beginner to do direct approaches before he has even slept with a woman. Because you basically don't know what you are talking about when you go and tell her she is beautiful and you would put her on the table and fuck her brains out. You have never done it. "Models" methods work for Mark Manson because he has laid 500 women before writing that book.
Do indirect approaches and try to push conversations as far as you can (without giving compliments or saying/asking anything needy). You have to gain experience being "cool" with women first.
From now on, watch a James Bond movie before you go out. Pay attention to how he talks to women. And try to "act" like James Bond. It's all like an acting game at school. Don't put much importance on the outcome. The goal is to see if you can pull it off, okay?
Go out and do approaches, always walk up to her directly from front (She would be scared, creeped out if you approach from behind or out of her line of sight, and if she doesn't feel safe with you, there is no way you are attracting her even if you REALLY ARE James Bond)
Do it indirect. Make a teasing comment about something she is wearing/carrying/doing, or perhaps ask a question about it. Quickly change the topic and notice something about her (Could use cold game here; "You talk like someone who believes in palm reading..."- They all do.) No compliments, no courting behavior for now. When the odd girl or two shows interest back, asks things about you, smiles and laughs at things you say and shows other IOIs; compliment back and escalate.
By doing direct approaches without game or experience or congruence; you are limiting the conversation/interaction experience you could have gained by just pushing conversations. Assume you're a girl. Boy comes up to you and tells you that you are beautiful: he is expecting something from you, what do you feel? PRESSURED. What do you do when you feel pressured? You want to get the hell out of there, release the pressure, feel relaxed. Are you experienced enough to achieve that? No. Does she want to? She doesn't know, she doesn't know you' she doesn't know anything. So leave direct approaches to the side for a while. When you are really experiences and a PUA guru, do direct approaches and charm beauties like a pro. Until then.. Indirect (Although opinion openers and such are weird in daygame, asking questions or commenting on things that are happening/present: are not.)