Need easy to use accordian system

I need to add accordians to long complex web pages. All the plugins I have found work by building each accordian item as a separate component, then assembling them into a page. This is far too cumbersome and complicated for my naive users. I still have them on TinyMCE because Gutenberg is too complicated for them. Most cannot understand the difference between the minimise and close buttons.

Is there a plugin you know which will just give them the ability to designate content sections as accordian items, even if this was done by a default association with something like an H tag?

Thanks.