IMHO Google has been in decline since ~2010 or so, but it's only recently that the dive in quality became very noticeable. Try searching for anything even mildly technical outside of software, and you are presented with pages upon pages of completely irrelevant SEO spam. Automotive repair manuals (for very old cars) are one example; it used to be that you could easily find a link to a PDF, and the results were otherw…
I'm just glad I'm not alone, sometimes I second guess if I am the problem. Currently just to get basically workable results I'm finding myself putting "every" "keyword" "in" "quotes" (to make sure they're actually in the result pages at all), the site: modifier to restrict it to real sites, and negative modifiers (-"keyword") to remove some SEO results. Google used to be "magic" in that it knew what you were thinking…
Is there a superior alternative to Google?