How to configure to be "NTP synchronized"?
NTP enabled: n/a
NTP synchronized: no
RTC in local TZ: no
DST active: n/a
If you read the docs I provided above, it will tell you how to enable NTP synchronisation using either chronyd or ntpd.
I have installed oracle linux version 7.5
How did you install it, and why do you use 7.5 and not 7.8 which contains the latest patches and security fixes?
If you install OL using the standard Anaconda installer, then your timezone should be set accordingly. Simply click on "Date & Time". The installer also offers an option to synchronize the time called "network time". You can turn that on after you setup "Networking" and specify your Windows NTP server clicking on the "gear" icon.
If you somehow missed it and you are completely new to Linux, and don't want to read any documentation, simply reinstall it.