Samsung TRA id phone

[Android Central Question]

I live in UAE, I have bought a second hand Samsung s9 64GB, the phone is TRA and United Arab Emirates in Phone about in Settings. But when I checked with IMEI in online there’s shown It’s region USA phone. And the phone can’t Auto update and I can’t use Secure folder apps ...What’s the problem about Update and Is it real phone? My IMEI : [removed]