Not able to access ERPNext15 using Public IP on Oracle Cloud VM

Hello everyone. I am a new user of ERPNext.
I somehow manage to install ERPNext 15 on Oracle VM -ARM64 after 3 days :smiling_face_with_tear:
now when I run bench start command it executes successfully.
But when I try to access it via Public IP, I am not able to access it.
It says " This site can’t be reached"
I checked bench start command and saw that it is connecting on Private IP instead of my Public IP.
Please Help!