- Many like Proton and Tuta. Some dislike it not supporting standard IMAP and requiring you to use their own client. Other good email services are mailbox.org, posteo.de, dismail.de, disroot.org

- Nextcloud or Seafile could do the job. You either selfhost or have to look for a trustworthy hoster.

- Nextcloud gives you Collabora. Another alternative might be a good cryptpad alternative. For offline individual usage LibreOffice.

- Many options. Searx.info is the most involved cool one. duckduckgo, ecosia, are other options.

- openstreetmap.org also available via some android apps.

- GrapheneOS. Nothing as secure and private and usable really.