Depends on the level of smut. In Asian countries - by default - real smut implies a certain level of "freakiness" of the customer/reader. Which means - juicy fantasies. I think, the p*rn industry is pretty much the same. Having something very ordinary and something rather juicy in the same context might not appeal to a large enough audience. So, it's basically a niche story. You've got to comb through the josei-smut-section. Toned down smut should definitely be available.

does anybody have any straight romance recs that have smut but the main point of the story is an actual plot? no incest and no controversial age gaps or grooming if possible pls.