YouTube, I got rid of suggestions on the side, at the end of the video, and at pause.
Call me crazy but I even got rid of typing suggestions in the Firefox address bar.
On Android, I like the Niagra launcher because I can customize my entire home screen and hide everything else so that I only see it when I'm looking for it. No recommendations!
Luckily they're easily blocked with uBlock Origin.
If that makes you crazy, than I may be worse. I turned off all auto-suggest, auto-correct, auto-complete, and search in the address bar. I turned on the seperate search box, so I only search when I intend to, and I get exactly what I type, even if I msipel it.