I use Kagi for everything, and use DDG and Google as backup searches. Usually, if Kagi didn’t get me what I want, others won’t either. I still prefer using multiple engines when looking into certain things, and that’s no fault of Kagi.
Best feature IMO is personal ranking and DenyListing. For example, I can downrank Microsoft.com from my results, uprank StackOverFlow, and block CNet from my results. I can also downrank or block SEO nonsense sites from my results. I use this feature carefully, because I don’t want to create my own bubble, but some sites are empirically terrible quality
Do we have good malware scanners and anti malware for Linux these days? Forgive my ignorance.