Stop it. Nothing to be afraid of. They're just people. Some are idiots who you wouldn't want to spend a second of your time with and others are great people who you should get to know. They can get nervous, shy, anxious, and fear of meeting people just like you breh.
Just talk to the women who want to be around you. You say you have no issues speaking to older women so keep practicing on older women who are not family. Speak to women who don't intimidate you. You will learn.
If a woman doesn't like you, who gives a flying fukk. NOt everyone is gonna like you and you shouldnt be worried about what people think, man or woman.
You're a man. A black man. A 6'4 black man. You have much bigger issues to navigate through in life like finding a stable career, racism, staying alive, etc. Dealing with women should and will be the easiest of those problems for you.