See this: https://lemmy.fmhy.ml/post/133647
For a two click solution: YunoHost
Disclaimer: I didn’t try it out myself.
Could be bc of how you set sorting comments in your account vs guest’s default.
Neither Piped, Invidious, LibreTube, nor NewPipe have this option:
The only thing I found is an app called SkyTube that has a Deny List and an Allow List.
Opposite to Instagram or Facebook, on Lemmy or Mastodon you can create an anonymous account. Yes it will be logged (normal public internet), but you won’t be treacable. The UI doesn’t have any tracking scripts, and many instances don’t require an email even to sign up. Use the Tor browser to spoof your IP.
Kubuntu (Ubuntu but KDE), both great KDE UI and stable kernel. I use Kubuntu LTS.