You are not logged in. However you can subscribe from another Fediverse account, for example Lemmy or Mastodon. To do this, paste the following into the search field of your instance: !piracy@lemmy.dbzer0.com
⚓ Dedicated to the discussion of digital piracy, including ethical problems and legal advancements.
If you want something fancy, check out Seal or YTDLnis. I simply use yt-dlp in a Termux session.
NewPipe and forks of it like Tubular also have a download feature.