Can you recommend a korean or chinese drama where the FL constantly faces dangers and the ML is always saving her? For example, scenes where the FL is kidnapped, harassed and ML is saving and protecting her. I want a drama that has many scenes like these. No sad endings.

thats like 90% of the chinese dramas. just search with action/naive female lead tag

Possibly...(I don't remember for sure if these have a SFL or not but I don't think so)