There are randomness in many turn based rpg, even not based on DnD. But you'll probably learn how to improve your hit chances like you do in other games. DnD is much more complex than a lot of games... Sad that Larian hasen't implemented somekind of cover system because it's really easy to understand and to play with. More than saving throws.
That is why Xcom is a better game lol. Its so much more intuitive, and puts more control in the hands of the player over rng.
