Problem is, for me at least, Google is useless for predictions or recommendations. Search is still better than DDG, but way worse than peak Google.
Their recommendations are all over the place despite the fact that I have been logged in permanently in some form or another since GMail where still invite only.
No one else except my wife and my parents know more about me (and to be perfectly clear they know different subsets of me) but yet Google still insist on showing me the most irrelevant and annoying ads and suggest I call people at work in the middle of the night etc etc.