I have two spontanoius ideas:
1. Neudorf seems to be near the czech republik, because of historical changes of borders it is possible that the data you are looking for is there: https://www.archives.cz/web/digitalni_badatelna/
2. The data you are looking for (older ~1850) seems to be too old for the normal archives. You can try here: https://archiwum.archidiecezjakatowicka.pl/de/
