This is the worst necromancer that i have read about. The story is ok nut man os the mc bad at being a necromancer, setting aside making himself a hybrid fighter/necromancer like almost any other novel his on the momet strategy skills are even worse... He ai barely passable if he has time to plan... And yes you need comrades not because the necronclassnis weak its just that he just suck with it.
Please don't give me Solo Leveling, ive already read its novel to the end 5 years ago i need a different authors of your taste, probably id strike gold
I the rest i could give you are too similar to solo leveling either the guy is a necromancer( dark wizard) or a fighter/rogue hybrid, plenty of novels if you want me to share.