Yea, most have "angst", or are sad to watch even if they have a beautiful and lovable ending:
Hotel del Luna
Hi Bye, Mama!
There are dramas that are fun to watch, they have some angst, but mostly and overall they are great, funny, lovable:
Strong Woman Do Bong Soon
Weightlifting Fairy Kim Bok Joo
Sweet 18
Also worth mentioning,:
The Beauty Inside
Something in the Rain
There are also some movies like Miss Granny that I enjoyed.