what interaction is best for this?

Oh, I make it a habit to see if folks have a YouTube channel (8 out of 10 times they do).  As someone who spent a good amount of time in Singapore and the surrounding areas, I found your channel insightful.

Ah! I see what's going on here.  Looks like you may have accidently deactivated the trigger on your initial slide that allows the button to jump to the next slide.  This is indicated by the strikethrough lines on the trigger.  To toggle between active and inactive, simply click the thunderbolt icon:

Also, while there are times when you will want to set the "When revisiting..." option to "Automatically,"  I've found that "Reset to initial state" works well as a general setting:

Also also, it's worthwhile to consider deactivating the previous and next buttons (as appropriate) when elements are inserted on the slide to take the place of those buttons:

For example, on your second slide, you have a button that, when clicked, will take the learner to the following slide.  Consequently, you can safely uncheck the Next boxes so the learner understands they are to interact with the button on the slide and not the Next button along the bottom on the player.

Just a couple of tips for ya! :)