Comment by freediver

>I really wish a search engine would empower me to provide a URL ban list

Brave discussed implementing similar concept called Goggles:

https://brave.com/wp-content/uploads/2021/03/goggles.pdf

Kagi Search already has customizable 'prefer' and 'mute' lists for domains, as well as customizable 'lenses' which are similar to goggles concept from Brave. (disclaimer: founder at Kagi)

https://kagi.com