Hindu Monuments possible existed then, but they have not survived, Possibly mainly because they weren't built of stone. A couple of photographs of recognizable Hindu deities and votive pillars have survived from about one hundred bce to 200 ce. Hindu temple building began in earnest from your 5th century ce https://hanumanmandiradelaide.com.au/shani-dev-mandir-a-spiritual-hub-in-south-australia/