YouTube admits that it doesn't always get its suggestions right, so it will let users remove suggested channels that they don't want to watch. You'll be able to click the three-dot menu next to a video and select "don't recommend channel." YouTube will also attempt to make it easier to find content you do want. When you scroll up on your Homepage or Up Next, you'll be able to select categories related to your interests. The goal is to help users find what they're looking for faster. YouTube will also clue users into why they're seeing a particular video suggestion -- like because they viewed similar content in the past or other viewers with similar interests have liked it.
YouTube's algorithms have come under fire for everything from facilitating a "soft-core pedophilia ring" to pushing extremist content and suggesting conspiracy videos related to 9/11 misinformation, miracle cures and more. The new features don't address those issues, but at least now you have some control over what appears in your feed. If you watch one flat Earth video, you won't be subject to an endless stream of crazy.