Soki , 11 months ago I’m not sure how well my suggestions fit. Terry Pratchett, any of the Discworld novels. I really liked Equal Rites. Pratchett does cover serious topics, but in a lighthearted manner. Norse Mythology by Neil Gaiman. It is a funny re-telling of the stories aber Odin, Loki etc., which were more whack than I expected.
I’m not sure how well my suggestions fit.