Nothing showing in Game Mode

When I go press play and try to test my game, and this it all it shows (picture below), please help me.

It looks like you’re editing a prefab rather than a scene.

Do you have any suggestions to fix this problem? I’m new to Unity.

Up the top left is the button to exit prefab edit mode:

It still doesn’t work.

Right, after you’ve gone back to your scene, is there anything in your scene? If not, you need to put things into the scene.

I added stuff back and it still doesn’t work.

Is the stuff in view of your camera?

You should probably do some essential basics learning: Unity Essentials Pathway - Learn Game Development for Beginners | Unity Learn

A back and forth in a forum is not a good way to learn Unity.

Thank you for your advice. But I tried like everything and it still doesn’t show anything.