Having trouble getting transparent backgrounds in ChatGPT images

So, I don’t rightly know what the function is called, But my access started treating the need for transparency with this green background, Then, it would ‘cut out’ the shape and let me download it It doesn’t have a background after the cut… Maybe talk to your ChatGPT about it? Here’s a sample of the green that it uses, it’s like the same that a greenscreen would use instead of transparency? here (click for more details)