Mc is normal. He didn't reincarnate.He doesn't have a special power. No super luck. He uses normal way to get strong. Basically a normal mc having a life like everyone else in any world(fantasy, apocalypse, utopia, anime, space doesn't matter, as long as he is normal in that worlds sense)
Aside from being strong the two protags from “Heavy Object” They fit the bill on being normal but pulling off amazing feats.
Aside from being strong the male mc from “melancholy of haruhi suzumiya" fit the bill on being normal but pulling off amazing feats.
I wonder if such a MC even exists. No special talents or powers and no super luck? I guess you can kind of look at stuff like The Walking Dead.
I would like to recommend some non-reincarnate MC, but I'm not sure if it's still normal. because however normal he is, there will always be an element of luck there.. but if you don't mind, try read Death Sutra MC is just a young master who becomes a slave and tried to avenge his family who are slaughtered. MC started out as an innocent child then he became a calculative person. he did find an unique martial arts book but he did not immediately become an expert, but he practiced just like the others person. so in a sense, he's just a slave who has ulterior motives. it's wuxia novel and a bit heavy btw.
You can try reading Possessing Nothing although Mc was given a second chance(reincarnation), he's not lucky, or talented and always struggling. He doesn't have an ambition to become a God or anything else, he just wants to live a better life. I can't really put it in words, better for you to read reviews there.