 If you liked X |  ...then you might like Jujutsu Kaisen |
Both manga deal with the supernatural as if it were part of everyday life. There are complex linkages between practitioners of spiritual skills and government and business organizations. The characters, despite being powerful practitioners of magic, have to deal with day-to-day bureaucracies, such as salary, employment, personal relationships, etc. In both, there is a character who is much more powerful than the rest of the cast. And every structure of alliances and conflicts takes place trying to entice or stop this character. In both series, anyone can die, even if is a important supporting character.