Genealogy / Chojnice record - Poland research [2]

hi first timer here

i was wondering if anybody would know what office in poland would hold records for chojnice? im looking specifically for 1899-1920. chojnice was called konitz, west preussen. germany.

stupid question but would the records be in poland or germany im confused my grandad was born in 1914?

any help would be appreciated i have already emailed the polish state archives but have had no luck.