The day it was bought by Meta(Facebook) people should have moved away if you ask me.
Then again that's easy for me to say as someone who doesn't talk to anyone and so doesn't need any messenger apps. However I hear Signal is good.
I use Piped (https://github.com/TeamPiped/Piped) for youtube both on desktop and mobile through the browser, though there is also the app LibreTube which uses Piped as backend.