Racism is about institutions, power structures, and epistemology, it's not about youtube channels.
An internet rando blabbing to their cellphone camera isn't what makes median black family wealth 1/8th that of their white counterparts (https://www.federalreserve.gov/econres/notes/feds-notes/disp...).
It's institutions and power structures which creates that.
For example, speculative home values in whiter neighborhoods lead to higher home prices and thus higher property taxes and thus better funded schools and so the racist-system continues.
Nobody is explicitly being racist there. Speculating in the white neighborhood is genuinely a better investment yield. Just like with investing in Javanese over Sudanese neighborhoods in Indonesia or Croat over Serb towns in Croatia.
The human created systems, the cultural milieu and its structures, they lead to racist outcomes. It's all artificial. That's why passing works (https://en.m.wikipedia.org/wiki/Passing_(racial_identity)).
Realizing it's mostly cultural just like it is with say the Hmong and Lao people, where you can just change the clothes, grooming and mannerisms and our minds recategorize, that's the radical leap for people. There's physical differences but they're more imagined than real and can often be short-circuited. Our collective minds have an invisible override switch.
When people are being racist, they have an epistemology that the different outcomes is a natural result of racial hierarchies. They use these human created systems as their empirical evidence and not realize this logic is a self-reinforcing system.
It's like when police departments disproportionally patrol and focus on one group, find more things in that group and use it as evidence that their suspicions were well-founded. At different times the supposed more criminal groups have been everything from the roma, suffragists, gays, 7th day adventists, rock and roll fans, jewish people, Chinese immigrants, jehovah's witnesses, Catholics, italians... It's all arbitrary. The closed logic loop it perpetuates, that's racism.