I create several presentations each week. My app of choice is currently Microsoft PowerPoint. I switched to PowerPoint from Apple's Keynote in November 2020. It was a case of 3 strikes and you're out when Keynote lost a number of my slides from multiple presentations.

I supplement PowerPoint's native features with assets I create in Affinity by Canva

There are also myriad other little utilities both at the point of creation and at the point of delivery I use to make the presentation process easier.