It looks like you've already seen Bromance and Descendants of the Sun. Beyond those two, It's Okay That's Love is also very good. When A Snail Falls in Love is good if you enjoy detective stories and don't mind romance that's more on the subtle side. In Need of Romance 3 has one of my favourite male leads (it's a noona romance). I see that you've already watched I Need Romance 2 (I haven't seen the first two yet). My Only Love Song is a fun and quirky Netflix original, and Noble, My Love is very cheesy but great if you're just looking for something fluffy and short. Oh My Ghost and Strong Woman Do Bong Soon weren't my cup of tea, but they're both very popular and have pretty good production value + cast members.
If you're open to non-romance dramas, I haven't seen them but I've heard a lot of good things about Prison Playbook and Incomplete Life / Misaeng.