Manga, where in the world of magic (or superpowers), the main character has neither.
However, for some reason, the protagonist is not inferior in strength to the magic (or superpowers) users, and can easily defeat them.

I have already read "Black Clover", "MASHLE", "When a Gun Nerd is Reincarnated to a World of Magic", "Sono mono. Nochi ni", "Berserk of Gluttony".

Give me some more mangas like that.

Mushoku no Eiyuu: Betsu ni Skill Nanka Iranakattan daga - He's classless and without skills in a world where everything is based on your class and your skills...

~4400 manga completed
~1700 ongoing...