It's probably location dependent, but I wonder if there's a bit of randomness in there as well to give websites with equivalent information similar exposure.
Me too. I think often the complaints against Google expect a bit much from it. I mean use uBlock Origin to block some of the ad nonsense and if the first search term doesn't get it try something a bit different. Also set it to 30 results not 10 and scroll a bit.
My first result ...
How to fix a flat tyre - in simple steps with video - RAC https://www.rac.co.uk › drive › advice › repair-a-flat-tyre
An excellent first result thank you google.