Finding a dropdown page plugin that works

Have read through many messages here that just haven’t been answered and closed so not holding a lot of hope. I have been going through the plugins and tried 4 now that just don’t work with the template I’m using. Maybe the template won’t work with a plugin or perhaps I’m just bad at choosing something suitable.

Hoping someone might be able to suggest something that works? The site is at https://mathisschoolofdancing.com/home/ and the owner wants dropdown menus so we don’t have more than one line of menu items showing.