I've been using Kagi[0] for a while now and it's pretty great in general - but also has options to boost up / down / totally ignore certain domains. It also has "lenses" that let you set a context (example: I'm searching for code stuff so just include sites a,b,c).
It's really good and IMO more than worth the price.
Yeah, my Kagi list of content farms / SO clones which are completely dropped from all results keeps growing. On the other hand, searching just SO from Kagi still seems to give decent results.
It's really good and IMO more than worth the price.
[0] https://kagi.com