For me:
-The Expanse - The beginning was confusing AF and the politics didn’t make sense and seemed boring, so I quit. But then eventually after like a year or two, went to reddit and it was recommended again, so I just read some light spoilers and that helped me got through the first season. And then it has been an intriguing and thrilling journey.
Arcane.
It didn’t grab me for some reason, but then I wanted to give it a second chance one night when I was bored and ended up getting hooked. Still need to watch season 2 though.