Klang/Kube/Wessler

Why is it more difficult to find records for Baptists in Prussia? I am looking for Heinrich Klang (1852), Wilhelmina Bertha Wessler (1854) born in or around Konigsberg and Friedrich Kube 1862 born in Prussia. I would love to hear from anyone who even has the last names in their family line.

Thanks,

Lisa Mansilla

Hallo Lisa Mansila,
it is dificult, because there were so many Church districts
if You look only Königsberg, You find this:
https://familysearch.org/eng/library/fhlcatalog/supermainframeset.asp?display=localityhitlist&columns=*%2C0%2C0&PLACE=Königsberg&PARTOF=&prePLACE=Königsberg&prePARTOF=
better "Germany Preußen Ostpreußen Königsberg",

better You search so: Explore FamilySearch Catalog of Resources — FamilySearch.org
and Prussia is a large region.
You must know the name of a town or the Church district
good luck
Frieder Gutowski