>Facebook, Twitter
Use Mastodon or Pleroma.
>WhatsApp, Signal
Use XMPP or Matrix.org (the former is preferred).
>Instagram
Use Pixelfed.
>YouTube
Use Odysee or PeerTube.
>Reddit
Use Lemmy.
>Pinterest, LinkedIn, Snapchat, Clubhouse +14 more
Proprietary garbage, no replacement needed.