I'm far from an expert, but my understanding is that Western mainstream coverage on this stuff can't be taken at face value (to put it lightly) because the most commonly cited source is Adrian Zenz - a hardcore Evangelical working for the Victims of Communism Memorial Foundation (US backed group who take the Black Book of Communism's death toll as their official line, and who are responsible for trying to add global COVID deaths to the death toll of Communism). Supposedly he believes he's on a mission from god to expose the evils of the Chinese Communist party.

So are there abuses happening toward ethnic and religious minorities within China? Possibly, though it's incredibly difficult to get objective sources on this. Should you view the official Western line with extreme suspicion? Definitely.

Here's the wiki article on the Victims of Communism Memorial Foundation: https://en.wikipedia.org/wiki/Victims_of_Communism_Memorial_Foundation

I'm sure someone more informed than I am will chime in on this with more detail.