I am a bit late to the party but here are the 2021dramas I have watched.

Beyond Evil
D.P.
Doom at Your Service
Falling Into Your Smile (Cdrama)
Flourish in Time (Cdrama)
Hospital Playlist 2
Lost/Human Disqualification
Mad For Each Other
Mouse
Move to Heaven
My Name
My Roommate is a Gumiho
Navillera
Nevertheless
Racket Boys
Sisyphus the Myth
Squid Game
The Greatest Shaman Ga Doo Shim
To My Star
Vincenzo
Youth of May
Yumi’s Cells

I am also currently watching Happiness and The Red Sleeve.