I am from smaller country, so I get that the pool of advertisers must be smaller too.
I bought a new bike this year and religiously researched this topic and consumed a ton of cycling videos. What ads do I see? Cars. I don't have a driver's license.
Facebook isn't any better. Last year I was in South Korea and logged into Facebook once. After my return, FB managed to exclusively display ads in Korean for over a month.
Then there are the occasions where you research a topic, buy a product, and then get to see ads for the product you already bought for a year after (I saw ads for the NI Maschine midi controller for over a year after my purchase).