Ask HN: How do you use Google to find legitimate and good content?

Today is one of those days where I have 5 hours blocked off to do research. I have three topics I want to focus on (all unrelated): 1. How robotic process automation (RPA) works and who the key players are. 2. Examples of very good personas for marketing. 3. How to use Django as a backend for React JS. When I use Google, I get a lot of SEO content that has absolutely no value... And a lot of the blog posts I find that seem relevant are also out of date or simply incorrect (e.g., Django -- typos in code that clearly throw errors, and then I worry about security). Don't even get me started on RPA because aside from a few market research reports and press releases, it's all the same content. I do a lot of work in ML and don't remember the last time I searched on Google for anything... I read newsletters that are behind signup walls, but these aren't indexed... I also follow people on Twitter and watch Youtube videos, which are nearly impossible to sift through in a search-like interface. What am I missing? Does anyone have any advice on how to search? I feel like I'm from another century (though technically I almost am). :-)