A few of the better tv series of the year 2019 are for me (not necessarily Netflix) are:

See (The Apple Tv Show they really want to do this show big with a huge budget and it's really good)
Watchmen (Great HBO Serie, it's actually one of my favorites)
Godfather of Harlem
Power
The Boys

Some good Series that are already older:
The Wire (insanely good show recently rewatched it again and it is so good)
Fringe (rewatching this now and I love Walter the crazy scientist it is really nothing like other series and quite unique)