Why do other blk people always say I sound white? I only have the accent based on where I lived most of my life.

I feel like I can’t do things I enjoy doing or like to do. I want to make vlogs or do YouTube and TikTok’s but everytime I open my mouth to tell my story or speak up. People have a issue with how I sound. I think I am undiagnosed mildly autistic, and I speak what they are saying white and clear, and some people say I sound like a little girl. I guess I have a baby voice too. I can’t help how I talk I was raised in Wyoming most of my life I was the only black girl in the whole school from the age 10 to almost 16. My parent moved me to the South right before I graduated highschool. Since I moved to a place where more people look like me I get bullied constantly for how I talk even as a adult. It’s like they are mad that I speak politely and we’ll spoken. It’s mostly other blk women that have a issue with how I talk. Which is weird because I hear well spoken blk women all the time and see it online. When I joined a space on TikTok as soon I started talking they was like why does she talk like that, and it really makes me nervous and sad and then I feel like I talk weird. Should I take speech class, do I have a weird sounding voice? Is there anything I can do ?