What do you mean we found out that Troy existed? We always knew it existed, it continued to exist as a city until about around 1300 AD, it's present in the Home

What do you mean we found out that Troy existed? We always knew it existed, it continued to exist as a city until about around 1300 AD, it's present in the Homeric stories along with Gods, but so are a bunch of other cities and like those cities we have other attestations for Troy like coins from there, inscriptions, etc. There was some debate about how old the city was and if it had moved a few miles over the centuries (it didn't), but no serious scholar ever suggested Troy was not real.