To create a new visualization type you don’t need to change the type of the table visualization but to create a new one. You should have a “+ New Viaualization” button on the query page.
If you don’t see it, it might be one of two:
You’re on the data only view of the query. In this case, switch to source view to see the button.
You didn’t create this query. Currently only the query creator can add new visualizations.