@Wolfie. Your voice is an expression of your mindset. How you see and engage in the world. It is also reply entwined in our central nervous system. Tame it, and refine it and it will be one of your greatest tools, don't and it will often betray you (or maybe expose you is the right way of putting it). It pretty much conveys a totality of character. You can certainly fake it till you make it but there are some fundamental things that can aid in it.
First, do manly things. Push yourself. Have purpose. Drive. Focus. Overcome challenging situations. Learn to think on your toes. You can do all this infield if you want but there are myriad ways to do this in life.
Next. Work out take care of your body and mind. Meditate (helps to keep a cool mind) Eat well. Take cold showers. Build your T count. Engage with your psychological reality. Seek self knowledge.
Own your sexuality. Lean into your desire not away from it. Allow your self to engage with the more sensual aspects of life.
Now the voice:
Be calm, yet engaged. Low, slow. You want presence and energy behind your voice but you don't want to sound like you are trying. Think casual. Think late night radio host, but less with the theatrics and more everyday life. Think smooth. Silky. Warn. With an element of assertivrness. Strong and steady though not forceful. Allow some life into your voice. movement. Flow. Like a river. Allow passion in when life calls for it but don't get carried away. Never getting carried away. Always cool. Always engaged. Pace your self. Moments of stillness till it feels like the dam is going to burst. Moments of smoldering energy. Like hot coals
Practice in front of the mirror and can the scripted shit. Improv. Picture yourself in different seductive scenarios. Different lines and responses you might encounter. Run it over and over until you feel like "damn even I want to fuck me"
Hope this helps