Necromancer's Cultivation Secrets

(Western fantasy + necromancer + single female protagonist + non-human + no system) Attlee, who was hit by a truck and died, traveled through time and became a garbage skeleton wizard. Attlee was very embarrassed when he suddenly traveled through time. Even if the little brother is gone, why doesn't he have a system? Hello! ! ! (This is the first time a new author is trying to write a long novel. Please don't criticize anything you write poorly. If you can't help it, don't criticize it too harshly. You can point it out and I will try to correct it.)