I don't know if you have target stores where you are, but their receipts always have a bunch of coupons on the back.Not entirely. There’s something else going on. Maybe some kind of randomizer. I get ads in languages I don’t speak for products I don’t have any need for and have never searched for. Not always, but often enough to be noticeable.
A good number of them are salt that are deliberately things they expect you to be uninterested in. Targey salts them because it creeps people out of things are targeted too well. The Targey article talks about it
Google sds also include options ad buyers can cheaply shove their ads in that are barely targeted if they are targeted at all, those are probably a good chunk of their salt. Some of the ads will also be just cheap scattergun tsrgeyio because there are a certain number of people who speak that language expected to be into in that thing also visiting some of same sites at similar times. I'll occasionally get Norwegian(?) ads because the city I live in happens to have a pretty sizeable Norwegian population and a yearly event I've never seen to