My all time favorites are:
The Incal - Moebious & Jodo
Before the Incal - Janjetov & Jodo
The Meta Barons - Giménez & Jodo
Fragments of the Encyclopedia of Dolphins - Prado
Nikopol Trilogy - Enki Bilal
The Techno Priests - Janjetov & Beltran & Jodo
Jeremiah - Herman
Megalex -Beltran & Jodo
What do you think about those and what are your favorites?
Yeah, the Nikopol Trilogy is pretty dystopian stuff. If it gives you a bad mood maybe read something else. What about “The Gardens of Aedena” by Moebius? I found it to be light and uplifting while still feeling deep and intense.