[lordwarnut]

Might I suggest the plugin uBlacklist. I use it to block a whole bunch of domains from google search that I don't want to see anymore.

[oven9342]

You are an angel!

[ReadCarlBarks]

You don't need to use a separate extension to filter out search results. You can use this tool to generate filters for uBlock Origin: https://letsblock.it/filters/search-results