Are you talking about DaVinci Resolve? I heard that this's a Complete Editing Platform. The advanced audio features in DaVinci Resolve are comparable to Premiere Pro and Final Cut Pro. Don't know if it's true, didn't try it, though I edit my youtube videos for quite a long time already.

Lol, of course, there are so many free video editing programs. You can just google it and already find about 10 of the best ones. Anyway, as you are asking I'll share with you one that I know works ok. I am talking about Fastreel by Movavi. If you know what's Movavi then you already understand that this is a good choice. Firstly it's free; Secondly, you don't need to download the program on your PC; Thirdly it's easy to use; Fourthly, it has (if I am not mistaken) 21 video-editing tools available. Try it.