Greasy Fork is available in English.
Removes ads (a.k.a. sponsored posts) from feed and sidebar
< Feedback on Facebook Hide Ads (a.k.a. sponsored posts)
Sorry for your negative experience using ViolentMonkey, which my userscript has never been tested with. Nice red curves in your screenshot, tho.
Anyway, the userscript is no longer maintained, in a possible future some author will fork the code and keep the script updated. You will be able to upgrade it and again enjoy wasting time without ads. In the meantime, you will be so kind to try another browser with TamperMonkey, my userscript's supported add-on.
Doesn't work at all. All ads remain.