I’m in the US so I’ve mostly watched US TV shows, I’ve been wanting to watch shows made by other countries as there must be some great ones that never took off in the states.
I’ve seen a few I could recommend like Alice in Borderlands (Japanese), Gangs in London (UK), Lupin (French)
I really enjoyed “The Devil’s Plan” on Netflix. It’s a South Korean reality show with smart people solving puzzles. If you like math, you’ll like this show.