Seeking Guidance on Embracing Islam

Assalamu alaikum wa rahmatullah. I'm a 26-year-old Black man from the US. Raised Christian, I now see some of its shortcomings. It often encourages us to turn the other cheek while systems keep oppressing us. It also troubles me that Christianity was the faith imposed on my enslaved ancestors, used by oppressors to control them. How can I follow that? Sometimes it feels like a religion of weakness. Islam first caught my attention through the Nation of Islam, inspired by Malcolm X’s story of transformation. The Nation of Islam emphasizes Black self-reliance and standing against injustice. It felt real, like a way to reclaim dignity. But Muhammad Ali truly inspired me. He wasn’t just a great boxer; he was a symbol against racism. He changed his name from Cassius Clay because it was a “slave name,” standing up to the government and the world. Ali showed strength and pride in Islam for Black men in America. His courage motivates me in facing this unfair society. I’m close to reverting to Islam, inshallah (since we believe we are born Muslim). I’ve started making changes to prepare: fasting every day of Ramadan, which builds discipline even with my busy mechanic job. It clears my mind and helps me understand others. I stopped drinking alcohol six months ago; no more escaping reality. I make dua daily, even at work, which keeps me grounded and humble. I’m learning Arabic with apps and classes, memorizing Quran verses in the original language. These changes have shaped me: fasting gave me control, sobriety improved focus, prayer brings responsibility, and Arabic opens deeper understanding. I feel like I’m becoming the man I want to be. But I’m unsure about which Islamic path to follow. Sunni Islam feels universal; most Muslims I know follow it, focusing on the Prophet’s teachings and community. Shia Islam appeals because of its history: Imam Ali’s sacrifice for justice, Saladin’s stand against the Crusades. Some Shia-led countries support Palestine strongly, which matches my views on fighting oppression. It has a revolutionary spirit that speaks to me. The Nation of Islam still interests me since it blends Islam with Black identity. But I wonder if it’s truly Islam. I’ve read books and watched videos but would really appreciate advice. Which path should I choose to return to Islam? Sunni, Shia, or the Nation of Islam?