Should accordions have previous and next buttons?

I personally think that accordions should not have next or previous buttons, which is different to a wizard, where there is a specific order in which data must be entered.

Moreover, this might end up cluttering the form with unnecessary buttons on each panel.

And with the modern forms, I think that users know what an accordion is and clicking it expands and collapses it.

Is there any use of these 2 buttons in an accordion and what is the general norm around this?