I liked the first 3 but 4 and 5 weren't my cup of tea.
I'm finding the opposite with Assassins Creed, didn't really get into the early ones but Origins and Odyssey were real time sinks for me.
I liked Black Flag and completed that (AC).
Haven't bought the newer ones though.
I liked 2 but was rubbish at it, 3 is the only one I played through to the end. I've got a good way through 5 but there's not much compelling me to return to it.