To use these add-ons, you'll need to download Firefox.

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Iceggiren i Easy Youtube Video Downloader Express

Easy Youtube Video Downloader Express sɣur Dishita

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Icegger-it Aseqdac Firefox 15591755
sɣur Aseqdac Firefox 15591755, 3 jierren lyn
Requires you to pay before it will let you download anything. You get a "Download" button on Youtube but this "download button" actually forwards you to a page that requires you to pay at least $10 to use the extension.

yt-dlp is free people. Use that.