I'm in a similar situation at the moment. Somehow Spotify has decided that I listened to a bunch of Hindu music a couple of months ago and now over 50% of my recommended playlists and podcasts are in that genre.
Their refusal to let you delete history is just puzzling.
It seems to be a bit of a mix. Some is definitely religious Hindu music, other bits seem to be more broadly Indian/Bollywood.
As is the curse of modern technology I don't want to interact with it at all in case the algorithm decides I'm into it and undoes my work retraining my preferences.
I just checked in to an airbnb and someone left their google account signed in to the youtube app on the TV. The temptation to spike the recommender with something is very strong. :)
I think more likely is I searched for something, hit the wrong result, then got distracted while it was autoplaying through related artists for a few hours.
Their refusal to let you delete history is just puzzling.