Best Audio Editor What Is The Best Editing Software To Record Audio From A Phone And Lay Audio Over A Powerpoint Presentation?

What is the best editing software to record audio from a phone and lay audio over a powerpoint presentation? - best audio editor

I am the host of a business training with my phone on your computer and then with the help of a PowerPoint presentation on video. What is the best software to use? I want to be able to get separate video and audio.