People Made Fun of Me for Being Jobless but Its Not Bad at All - Chapter 21

what bs is this? didnt they say right from the start that his job class got the highest mana pool? so why is he out of mana so fast? if the other job classes got less mana this this job then they would be worthless in battle always out of mana faster than him lol and another thing didnt he learn a skill that would help him with his mana pool and stuff? sighs