If it's about privacy, you can still use google search through various proxy search engines as others have mentioned.
That might be true, but I'm not sure. Outside of local searching I am skeptical of the benefits of filter bubbling.
I think it is just as likely that you and your brother have different opinions of relevance (even if you were both returned the same exact results unrelated to past activity), and the relevance decisions Google makes more align with your brothers perspective.
I am the creator of one of the search engines [0] named in the post. It will return the same exact organic results no matter who you are or what your prior searches were. Feel free to give it a go with your brother and see how it compares for both of you. For organic results, it works like DuckDuckGo does with Bing, but the difference is the main source of our organic results are actually from Google.
Now go to DDG and search for "tires". Useless results only. All advertisements and commercial results, but nothing relevant to me. "Getting out of my filter bubble" did not help me in this use case.
I bought a large refurb iPad Pro and pencil this spring. Presumably a high value segment, since YouTube, amazon and google keep on pushing me iPad related ads and content for months now, for things I have already bought, out of my own research.
I guess I’ll have to fake some baby related purchases to have their focus changed.
I have yet to find a case where "profiling" benefits me, as a user.
That's actually a really interesting example. The tire sizes for a 2020 Honda Insight EX are either 215/55/16 or 215/50/17 [0].
So taken at face value, the filter bubbling was either incorrect or Google was just returning results for a very common tire size in this case.
I agree that context is important, but Google doesn't return results blindly when they are not able to do personalization. They already know the results that millions (billions?) of other people who have searched for tires have clicked and found relevant.