I could try to explain the iso problems with this but it would be easier to just show you. This shows the problems with your lines. Also, symmetry and consistency is important to pay attention to for precision and cleanliness in iso.

I know, and I want to learn how to do this kind of art law. I'm not very good at isometric, but I'm trying to do better. This was my first will attempt to isometric

There are many mistakes and missing things, like the volume control. There are also many problems with the perspective.