You will need to install a user script manager extension to install this script.
Customizes YouTube based on user preferences.
You'll know it's working by checking the console log; it'll tell you what it has removed by giving you the titles of the videos.
Update: 27/07/23: It now notifies you at the bottom center of the home page what video it has removed, and the removed keywords stand out so you know exactly why it was removed. It's also much faster and more stable than before (basically a re-write).
Use uBlock Origin: Add this to your "My filters" list:
Change the names to what you want removed; this is a lot faster and smoother than this script, but you won't get the notification, sadly.