I think that evil paths in games are often the least interesting, too. Usually it just means you kill everyone and/or fuck people over for no good reason. Like you said there’s no depth. You almost never have to face any growing consequences for your actions.

Real evil is usually greed and fear weaponized to enrich and empower oneself. It’s self-interested and often delusional, but to that person they are still the hero of their story.