In the numbering docs it lists these as built-in display options:
1,a,A,i,I,α,Α,一,壹,あ,い,ア,イ,א,가,ㄱ,*,١,۱,१,১,ক,①, and⓵
I’m not familiar enough with Kannada to know if one of these is correct.
To use one of these for the page number:
#set page(numbering: "1")//Change 1 to what you prefer
Also, I’ve changed the title of your post to better match the guidelines. Specifically:
Good titles are questions you would ask your friend about Typst.