..but tried follow the video I'll link below, using DNS settings, and 2nd method using Command Prompt. Neither worked, but I wanted to show you what I'd done so far. I've seen the info on downloading it through Google Chrome but I don't use Google Chrome, I use Firefox. I thought I might always have to use Chrome to get to the Youtube App and I don't want to do that.

Can anyone shed some light on why I can't get the App to download on my PC? I have Windows 21H1. If you need more info, I will be happy to supply it Thanks much!

PS Not happy using the website for Youtube, and heard I might get better sound-quality using the App instead.