Have you thought outside the slide deck?
The screen share feature of Zoom unlocks all sorts of possibilities. You can share pretty much any app, videos, audio, a second camera to show documents or physical objects. You can share your phone or iPad screen, so that opens up anything you can display on those devices, including their cameras.
Since you can share your browser, that opens up the web. Depending on your audience and what you are presenting, Kahoot is great for adding energy and interaction. It’s technically a learning platform, but you can make quizzes and polls to enhance your presentation. Kahoot livens things up with colors, sounds, timers, and competitive scoring.
As a speaker and instructor myself, I’ve had better results sticking with Keynote and introducing other elements to enhance the presentation. I know this wasn’t your question, but maybe it helps you 