A serious romance with drama and all the good stuff but not placed in a fucking high school bored to hell with this shit. It can also be a fantasy adventure i dont mind. A few novels i read and i liked who were like that were Mushoku Tensei, Hige wo Soru, Spice and Wolf. Also if possible the novel is already finished or close to finishing
There are lots of chinese webnovel like that, with josei or shoujo tag. https://www.novelupdates.com/viewlist/27192/ one of my bookmarked list, I especially liked Grumpy Crab's works.