Please share beginner-friendly recommendations.

Since you seems to only add Japanese and South Korean drama, how about:

Japanese:

Juhan Shuttai! (slice of life at workplace, character development)

Kikazaru Koi ni wa Riyuu ga Atte (romance, slice of life, character development)

One Piece (adventure, action)

Korean:

Dali and the Cocky Prince (rom-com)

Mr. Queen (rom-com but more comedy, foods)

The Trauma Code: Heroes on Call (medical, comedy)

If maybe you want to try Chinese: Filter (rom-com, self-acceptance)