Which aspect of turn-based fighting do you not understand? Is it how it works, or how to strategize? Or, does it have more to do with the logistics of it? I mean, I've always felt turn-based combat was very strange within the context of the game. Why are the participants taking turns and trading attacks? Why would I, if I were the character in the game, wait whilst my opponent makes their move? If this were a real scuffle, it wouldn't play out anything like this!
That's certainly an accurate description of Final Fantasy games, I would agree. At least, of the ones I played. The games have always felt a bit behind the times with the random battles, other RPGs have moved away from that long ago. I don't know if the ones after number 8 are still like that, but I have a feeling it hasn't really changed. They very likely are something you wouldn't like. I do still think you should try one, if an opportunity comes up, even if it's an hour, or ten minutes, if for no other reason than so you can say with confidence "I have tried Final Fantasy I do not like it."