Privacy friendly online alternatives

Please let me know, if you have some good alternatives

• Productivity
  • Cryptpad - instead of google docs / google sheets etc… selfhosting is possible
  • Jitsi - instead of Google Meet / Zoom and so on. selfhosting is possible
  • etherpad - as online collaboration pad selfhosting is possible
• Social Networks
  • Friendica instead of Facebook selfhosting is possible
  • Mastodon instead of Twitter/X selfhosting is possible
  • Peertube instead of YouTube selfhosting is possible
  • Pixelfed instead of Instagram selfhosting is possible
• Others:
• LinkStack - instead of linktr.ee selfhosting is possible