Correct me if I am wrong, but in newer versions of blender, you go to the view menu in the 3D viewport and render viewport (because I don’t know where this opengl button that looks like the little clacker is). Then you can choose “view animation” from the render menu.
Also, to hide the rig, I think you go to the N-menu and view – collections and hide the collection with the rig. You know me, the menus and stuff are quite different now, and I am always just trying to help people out. But I am not an expert.