The system was never designed to show you relevant ads that you want to see and would like to buy a product from. The system has always been designed to show you profitable ads. Those have always been and will always be a completely distinct set, with only coincidental overlap if at all.
It's almost like people think that the phrase "relevant ads" means interesting to the person viewing the ads. Instead, it means you are relevant to the person buying the ad, so Googs shows you their ad. It means you are in the age range and income range, and possibly the geographic area that the person buying the ad placement finds relevant. The person viewing the ad is never relevant to Googs.
The system was never designed to show you relevant ads that you want to see and would like to buy a product from. The system has always been designed to show you profitable ads. Those have always been and will always be a completely distinct set, with only coincidental overlap if at all.