Sorry, if these aren't what you want.
I do know NUMEROUS mc book series for ages 8-12 ( I DON'T CARE I'M TOO OLD FOR THEM! DON'T JUDGE ME!)
Will those work?
If so, you can pick
1. A series by mark Cheverton (all are Minecraft If you want recommendations on which set just tell me)
2. Whatever series the quest for the diamond sword is in.
3. Whatever series quest for the golden apple is in (they're graphic novels)
4. The woodsword chronicles (the series is official)
5. Whatever series trapped in Minecraft is in
If you want more book choices that are MC I have a LOT and I mean A LOT more. But most aren't series.
Hope these work.