All of the Isekai novels I love, don't include tragedy (cuz who wants to read tragedy, enough of it exists in daily life) or r*pe. Genres contained are comedy, drama, revenge (where the villainess is actually a proper villaines and not all roses), innocent! dense! FL, Fluffy, HEA etc.

Novels not found on NU, can be read on Bato - Fold all the ruin flags in the remaining day: Well RTA record 24Hr (Loved the concept, that the villainess only has 24 hours to fix the mess, solid read and you won't be bored)