For what it's worth, there are plenty of tables that focus a lot less on plot & roleplaying, and more on the combat & puzzle aspect. There are even whole RPGs that are effectively dungeon crawls, where your characters don't need much of a personality, and are often explicitly disposable.
D&D may not be for you, but I bet there's a RPG out there that is!
D&D may not be for you, but I bet there's a RPG out there that is!