How to detect a non-clickable button?

I have a page I’m monitoring that occasionally has a button that is not clickable…

div id=“296722790” class=“bb-selection-button selectable”
or
div id=“296722790” class=“bb-selection-button disabled”

There’s multiple buttons, and I can’t use the button ID as it’s different every time, so I access the button using xpath=//div[6]/div[2]/div/div/div/div

How can I detect if the button is available?

All suggestions are welcome.

Please see How to click buttons with changing ID