Major issues with these "I got/picked shitty skills but they're secretly OP???" stories is that none of the skills are shit. Either their potential are unexplored, they're just harder to use, or the MC is somehow so smart they'll figure out how to make an item or a move that somehow no one else ever discovered.
This manga doesn't really do the whole "MC utilizes shitty skills in a clever way to make them strong" well. There's no depth to it so if you're expecting something cool to come from this don't hold your breath.