Another option is to physically go to your local city/municipality hall or church.
Pre-WW2 records are hard to come by since many records were destroyed during the war before they were digitized, especially near Manila. Another option is to physically go to your local city/municipality hall or church. They may still keep old records in the civil registry. Speaking of churches, you may also reach out to a Mormon chapel near you since they also collect family history records. They do operate the familysearch.org website, after all .