I read a lot of novels and got tired pretty soon of the cliches with dumb Mc but super op and all side characters are just there to sing his glory. Until I read the Supreme magus, where a fucking nation is stronger than a 12yo (its sad that this setting is special) and all the side characters have depth, the Mc has a character development throughout the story and has a mature setting overall. Now that I am caught up with the release I'm in a reading swamp an seek this community's advice
okami wa nemuranai? isekai mahou wa okureteru, Deathbound Duke's Daughter, Kenkyo, Kenjitsu o Motto ni Ikite Orimasu, Reincarnated as a Sword, Reincarnated as the Piggy Duke, Teogonia, The Holy Knightâs Dark Road. Its not specifically "Makes sense" but its not as ridiculous as compared to what you describe. though this is just my opinion.
Embers Ad Infinitum Lord of the Mysteries Mother of Learning My House of Horrors My Iyashikei Game The Zombie Knight Saga
The Last Science by Etzoli https://www.royalroad.com/fiction/28687/the-last-science-se Or https://www.royalroad.com/fiction/18574/the-last-science I suggest read the [SE] version, same story but split into smaller parts. Enjoy.