Hi Himanshu,
You created an object and called page/microflow. So give the visibility accordingly & check it.
If this didn’t worked, then goto your create object, check allow & delete object under access rules for the respected user and try.
Hi Himanshu,
Instead of creating object in navigation, you can call a microflow to create an object and pass it to the activity of showing page as shown in below screenshot:
if you have used security then give proper access rights where needed.