I am looking for something similar to Azarinth Healer and Delve where an MC is plowing ahead at making their idea of a good build in a litRPG setting.

Other, similar stories are Randidly Ghosthound and The New World but both of those lost me because they take themselves more seriously and the stakes don't convey that for me.

I would appreciate something more light hearted with an undertone of seriousness like Azarinth and Delve seem to hold for me.

Tone wise Siphon would also fit, but last I read it there was no build to be worked towards and that's part of what interests me in litRPG/System based stories.

https://www.royalroad.com/fiction/8894/everybody-loves-large-chests - monster mc
https://www.royalroad.com/fiction/25/necromancer-by-halosty - vrmmoprg, royal road, finished
https://www.royalroad.com/fiction/19613/skeleton-in-space - fantasy + sci-fi, first book on amazon
https://www.royalroad.com/fiction/26294/he-who-fights-with-monsters - new