I highly recommend reading this book - https://www.amazon.com/Models-Attract-Women-Through-Honesty/dp/1463750358
Many people don't understand what introversion is and that it is in fact different from being shy. I am introverted - that means that I am usually very thoughtful with my words, I am a good listener, I am usually direct in my conversation (no small talk!), and yes I focus on having fewer good relationships. Being shy on the other hand means that you don't say what is on your mind because you are afraid of what other people will think of you. As someone who was shy and is introverted, I have learned to own my introversion as an extremely powerful and wonderful aspect of my personality. Even though I am introverted, I can go up to a women - who I think is attractive - and say exactly what is on my mind - I think you are beautiful and I would love to get to know you. You don't need to be quick witted, you don't need to be charming, you don't need pick up lines - all you need is to be confident and self aware. And yes, women will reject you but that is not a bad thing honestly (it just takes some getting used to).
Yeah one thing you should is read this book: No More Mr Nice Guy: A Proven Plan for Getting What You Want in Love, Sex, and Life https://www.amazon.com/dp/0762415339/ref=cm_sw_r_apan_glt_i_MKFVJ2SHD3HJE7TDNQKG
Highly recommend this book by Corey Wayne (you can get it free from his website or an audio book from amazon). It's a relatively short read (listen). He doesn't give many specifics but more the logic behind attraction so you can use that logic to fit your personal circumstances. https://www.amazon.com/Winning-Heart-Woman-Your-Dreams/dp/1411673360