'The paradox of choice' says the exact opposite. When presented with more jams to sample, more groceries shoppers stopped to try, but less actually bought. Reducing decisions is conversion 101.
Or more likely: Confirmation bias. I also occasionally get Nigerian memes on IG despite never having searched it. But unlike you I don't have the Nigerian film google search history that would lead me to conclude it was targeted.
Put another way, if you googled a Swedish film then saw Swedish memes you would think that was targeted. Then upon viewing the Nigerian memes you would have attributed it to a random video rather than anything targeted.
Yup. One takeaway I took from the book "Factfulness", is a useful exercise for
encountering bad news; ask "would the opposite news have reached me?". The answer is almost certainly, no.
A bit rich when all the companies mentioned are across the pond?