Dark souls 2 has a motivation. You're going Hollow and heard there's a cure for it in Dranglec. Why you have to murder people to get it I don't know, but that's a fair shake. Elden ring is "you come from a distant land to become Elden lord because... you just do okay?"
No, I'm pretty sure it's for exactly the reason I said.
Dark Souls 2 on the other hand, you start out going to Drangleic to free yourself from the curse, and you start out rooting around killing some people to go see the king (which is fair enough, as I recall he "peered into the essence of the soul" so he might be a good lead). Then, about halfway though the game, your motivation suddenly changes to becoming the next monarch. The problem is, the old monarch went hollow just the same as everyone else, and it's not clear how anything has changed, nor is there any apparent connection between becoming king and lifting the curse. I would say that kingship doesn't have much luster when you know you're cursed and doomed to lose your mind, and yet the game insists that that's what you want to do. In that regard it's very different from Elden Ring, where the motivation to become Elden Lord is secondary to curing the world of its fucked-upness. It just so happens that you can't do one without the other.