3d object not visible in game scene

Hey ,
i am new to the unity , i am just trying to add a object in my scene but the object is not visible in game scene.
i have tried to look some solution online but nothing helps ,can some one plz help!!!

I do not see a camera in your scene.

This might be the issue… there is no camera in your heirarchy. try adding a camera it should work

i have added the camera but the 3d object is still not visible in game scene.