As a quick thought, have you seen Cyberpunk Edgerunners, and Made in Abyss?
For stupid fun (mood dependent), then probably One-Punch Man:
https://en.wikipedia.org/wiki/One-Punch_Man
It's super famous these days, so you've probably already seen it. ;)
Personally, I also really liked "Hai to Gensou no Grimgar" due to its focus on character growth rather than action:
https://en.wikipedia.org/wiki/Grimgar_of_Fantasy_and_Ash
But, not everyone's a fan.