I used a built-in Windows tool to turn my basic PowerPoint into a polished video: Clipchamp

I used a built-in Windows tool to turn my basic PowerPoint into a polished video
https://www.makeuseof.com/make-narrated-powerpoint-video-using-clipchamp/

Export your PowerPoint as a video file
Start by turning slides into a playable video
Import the PowerPoint video into Clipchamp
Bring your presentation into Windows’ own AI video editor
Add an AI voiceover in Clipchamp
Use text-to-speech to narrate your slides
Know the workflow’s limitations
Understand what this setup can’t do yet
Combine slides with video effects
Add captions, music, and visual polish