Sometimes I visit miilionshort.com to search for something when google isn't cutting it. They have options to leave out the top 100/1000/100000/1000000 websites (By Alexa rank I believe), so I will try playing with the options to get something useful. It's not always fruitful, but I've found many nice things this way that would've been buried on google.

I've started going directly to page 4 on Google searches if I don't see Google's scraped answer at the top.

Starting at 4 seems to cut a lot of the SEO and content farms.

Google used to offer the ability to filter out domains from your results, but they haven't for years now.

I suppose a client side extension could do the trick. It might be a good option for a side project if anyone is feeling generous with their time.

There are browser extensions that bring back the "Discussions" filter that Google removed a few years ago. Unfortunately niche forums aren't really popular these days so you end up with older results.

I'm actually using Bing/DDG more because there's less content farms. It gives me less relevant results most of the time, but discovery is better.